Three toy boats with the same mass were in a lake. Two boats were moving and one was stopped. Each boat got bumped by another boat, but not in the same direction. All the boats changed speed as a result of being bumped. Use the information in the diagram to answer. Which toy boat(s) experienced the strongest force when it was bumped? How do you know?

All three toy boats experienced the same strength force because they changed speed by the same amount

The blue toy boat experienced the strongest force because it takes a stronger force to slow something down than it takes to speed something up.

The gray toy boat experienced the strongest force because it had the fastest ending speed.

The orange and gray toy boats experienced the strongest forces because they both gained the same force as they sped up. The blue boat lost force, so it slowed down.

Three chairs were rolling across a flat office floor. The blue and red chairs are the same mass, and they have more mass than the yellow chair. Each chair was hit by another chair, but not from the same direction. Use the information in the diagram to answer. Which chair(s) experienced the strongest force when hit? How do you know?

The blue and red chairs experienced the strongest force because they are both more massive than the yellow chair and they changed speed by the same amount.

The red chair experienced the strongest force because it is as massive as the blue chair and has the highest ending speed.

All three chairs experienced the same force because they changed speed by the same amount.

The blue chair experienced the strongest force because it takes more force to slow an object than it takes to make it go faster.

Scott and James work at a grocery store. After the grocery store closed, they were playing a game with a shopping cart and Scott’s skateboard. They crashed the skateboard and the shopping cart two times. The shopping cart had more mass in Crash 2 than it did in Crash 1. Use the information in the diagram to answer. In which crash did the skateboard experience a stronger force? Why?

Crash 2 ; the force on the cart was stronger in this crash because the cart in crash 2 has more mass, so the force on the skateboard was also stronger.

The skateboard did not experience a force; only the shopping cart experienced a force in the crashes.

The skateboard experienced the same force in both crashes. The shopping cart changed speed by the same amount in each crash and had the same mass, so the force on the skateboard was the same each time.

Sandra pushed a wooden block and it slid across the floor. The wooden block gradually slowed down and stopped after moving 10 meters. Why did the block stop moving?

The floor exerted a force called friction that is opposite to the direction of the block’s motion.

The floor absorbs force from the block.

All objects stop moving because their natural state is to be still.

Miniature golf is a game in which players hit a golf ball with a club, which causes the ball to roll along the flat ground. Three golf balls with the same mass were rolling on the ground. Each ball was hit by a golf club, but not from the same direction. All the golf balls changed speed as a result of being hit. Use the information in the diagram to answer. Which golf ball(s) experienced the strongest force when hit? How do you know? Responses

The green golf ball because it changed speed the most.

The white and purple golf balls because they gained force, while the green golf ball lost force.

The white golf ball because it has the fastest ending speed.

Hockey is a sport in which players use hockey sticks to push a puck across smooth ice. At practice one day, three different-colored hockey pucks were sliding on the ice. The green hockey puck has less mass than the black and purple hockey pucks, which have the same mass. A player hit each hockey puck with a stick, but not from the same direction. Use the information in the diagram to answer. Which puck(s) experienced the strongest force when hit? How do you know?

The black and purple hockey pucks ; they have more mass than the green puck, but changed speed by the same amount.

All three hockey pucks experienced the same force because they changed speed by the same amount.

The black hockey puck ; it is more massive and has the fastest ending speed.

The purple hockey puck ; it takes a stronger force to slow down a more massive object than to speed it up.

Mateo and Jackie were on a playground rolling some different-sized balls to get them to crash. They used a tennis ball (the same mass) in both crashes. They tried two soccer balls—a pink one (more mass) for Crash 1 and a blue one (less mass) for Crash 2. Mateo and Jackie want to know what happened to the tennis ball . Use information from the diagram to answer. In which crash did the tennis ball experience a stronger force? How do you know?

Crash 1 ; the force on the soccer ball was stronger in this crash, so the force on the tennis ball was also stronger.

There was no force on the tennis ball. In each crash only on the soccer ball experienced a force.

It was the same in both crashes . The soccer ball changed speed by the same amount in each crash, so the force on the tennis ball was the same both times.

Officials are looking into three different ski accidents. The accidents happened when three skiers (all with the same mass) were skiing across flat, snowy ground. They were each bumped by another skier, but not all from the same direction. These skiers changed speed as a result of being bumped. Use the information in the diagram to answer. Which skier(s) experienced the strongest force when bumped? How do you know?

All three skiers experienced the same strength force because they changed speed by the same amount.

The skiers in the yellow and purple sweaters ; they both gained the same force as they sped up, but the skier in the red sweater lost force and slowed down.

The skier in the yellow sweater experienced the strongest force because he has the fastest ending speed.

The skier in the red sweater because it takes a stronger force to slow something down than to speed it up.

Three friends were kicking soccer balls at a neighborhood field. Three soccer balls were rolling across the field. The black soccer ball has less mass than the blue and orange balls, which have equal mass. All three soccer balls were kicked by one of the friends, but not all from the same direction. Use the information in the diagram to answer. Which soccer ball(s) experienced the strongest force? How do you know?

The blue and orange soccer balls ; they have more mass than the black soccer ball, but changed speed by the same amount

All three soccer balls experienced the same force because they changed speed by the same amount.

The orange soccer bal l; it has more mass and the fastest ending speed.

The blue soccer ball ; it takes a stronger force to slow down a more massive object than to speed it up.

At dinner, Hans passed the salt shaker to his sister Jessica by sliding it across the wooden table. The salt shaker gradually slowed down and stopped after moving 12 centimeters. Why did the salt shaker stop moving?

The table exerts a force that is opposite to the salt shaker's motion.

The salt shaker ran out of force.

The table absorbs force from the salt shaker.

All objects stop moving because their natural state is to be still.

Curling is a sport in which players push large stones across smooth ice. Three curling stones that have the same mass were sliding across the ice. They were each pushed by a player, but not all from the same direction. Each curling stone changed speed as a result of being hit. Use the information in the diagram to answer. Which curling stone(s) experienced the strongest force when hit? How do you know?

The blue curling stone experienced the strongest force because it changed speed the most.

The blue curling stone experienced the strongest force because it takes a stronger force to slow something down than it takes to speed something up.

The orange curling stone experienced the strongest force because it has the fastest ending speed.

The yellow and orange curling stones experienced the same strength force because they both gained force, but the blue curling stone lost force.

After hockey practice, Carissa and Keenan were playing a game where they were pushing some objects to get them to crash. They were using a cone and two different pucks—a black one with more mass for Crash 1 and a blue one with less mass for Crash 2. They want to know what happened to the cone . Use the information from the diagram to answer. In which crash did the cone experience a stronger force? How do you know?

Crash 1 ; the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.

There was no force on the cone. In both crashes, only the hockey puck experienced a force.

The diagram doesn’t tell you anything about the force on the cone. It only gives information about the force on the pucks.

It was the same force in both crashes ; the hockey puck changed speed by the same amount in each crash, so the force on the cone was the same each time.

Force and Motion End of Unit Test

Authored by Kelsey Hughes

Science

6th - 8th Grade

NGSS covered

Used 11+ times

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25 questions

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MULTIPLE CHOICE QUESTION

30 sec • 5 pts

A push or pull that can cause motion.

velocity

speed

cause

force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Speed in a particular direction

force

velocity

motion

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

When objects collide, a force is exerted equally on both objects in the collision.

true

false

Tags

NGSS.MS-PS2-1

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

In a collision, forces are exerted in which direction

any direction

same direction

opposite directions

Tags

NGSS.MS-PS2-1

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Forces in a collision are always

the same strength

different strengths

Tags

NGSS.MS-PS2-1

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

In a collision, which object will have the greater change in velocity?

the less massive obejct

the more massive object

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

0 sec • 5 pts

Why does the pod have a greater change in velocity after the collision?

the pod have more mass than the space station

the pod has less mass than the space station

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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Force and Motion End of Unit Test

A push or pull that can cause motion.

Speed in a particular direction

When objects collide, a force is exerted equally on both objects in the collision.

In a collision, forces are exerted in which direction

Forces in a collision are always

In a collision, which object will have the greater change in velocity?

Why does the pod have a greater change in velocity after the collision?

The forces in this collision are always

A _____ is required to cause an object to change its velocity.

The moment when two objects hit each other

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