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WorksheetsForce and Motion EOU Review #2
Total questions: 40
Worksheet time: 41mins
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 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.
The diagram doesn’t tell you anything about the force on the tennis ball. It only gives information about the force on the soccer balls.
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?
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.
All three skiers experienced the same strength force because they changed speed by the same amount.
The skier in the red sweater because it takes a stronger force to slow something down than to speed it up.
What is it?
Pull
Friction
Push
Heavy
A ____________ is a push or a pull on an object.
friction
force
magnet
gravity
Forces that have a net force of zero Newtons
Balanced force
Unbalanced force
Scientists created models that show a rocky asteroid crashing into a moon (less mass) and a planet (more mass). In both crashes, the asteroid was the same mass. Scientists want to know what happened to the asteroid. Use the information in the diagram to answer.
In which crash did the asteroid experience a stronger force? How do you know?
Crash 2; the force on the planet was stronger in this crash, so the force on the asteroid was also stronger.
There was no force on the asteroid. Only the moon and planet experienced a force in each crash.
The diagram doesn’t tell you anything about the force on the asteroid. It only gives information about the force on the planet and the moon.
The force was the same in both crashes. The planet and moon changed speed by the same amount so that means the force on the asteroid was the same in both crashes.
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 takes a stronger force to slow something down than it takes to speed something up.
The blue curling stone experienced the strongest force because it changed speed the most.
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.
In a warehouse, the workers sometimes slide boxes along the floor to move them. Two boxes were sliding toward each other and crashed. The crash caused both boxes to change speed. Based on the information in the diagram, which statement is correct? In your answer, explain what the forces were like and why the boxes changed speed.
Box 1 has more mass than Box 2.
Box 1 and Box 2 are the same mass.
Box 1 has less mass than Box 2.
Suppose that an astronaut throws a baseball in outer space at a location far from significant influences of gravity and air resistance. One would expect that the baseball would ____.
eventually stop since all objects ultimately "lose their steam"
eventually stop as its inertia slowly becomes used up
continue in motion with the same speed and direction
either a, b, or c -- depending on whether the astronaut continues to push it
All objects have inertia
True
False
Inertia depends on ______
Velocity
Speed
Distance
Mass
Mac and Tosh are arguing in the cafeteria. Mac says that if he flings the jello with a greater speed it will have a greater inertia. Tosh argues that inertia does NOT depend upon speed, but rather upon mass. Who is correct?
Mac
Tosh
Neither
Both
More mass = More inertia
True
False
The rate something is traveling in a certain time
(example: miles per hour)
velocity
inertia
speed
The rate something is traveling in a certain direction.
speed
inertia
velocity
The amount of MATTER in an object.
momentum
velocity
mass
Inertia is the tendency of an object to resist a change in its ___________.
temperature
shape
size
motion
the tendency of an object to resist a change in its motion
acceleration
inertia
mass
frame of reference
When Izzy and Zoe pull on the rope with the same amount of force, the forces are _____.
increased
unbalanced
balanced
decreased
What is the net force?
3 N
3 N, right
17 N, right
3 N, left
