Force and motion

What measurements are needed to calculate the speed of an object?

• grams and force
• force and acceleration
• mass, time. and force
• time and distance

Choose the BEST example of balanced forces.

• a car speeding up
• a leaf blowing in the wind
• a car moving at a constant speed
• a tennis ball bouncing back and forth between players.

Choose the BEST answer that describes how the mass of an object affects its motion.

• The greater the mass of an object, the slower the motion of the object.
• The greater the mass of an object, the faster the motion of the object.
• The greater the mass of an object, the greater the force to move the object.
• The greater the mass of an object, the greater the distance the object will travel.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Melissa and Gabe were testing the flight of leaves as they tossed them in the air.  The leaves would go up and then came to a rest on the ground.  What force made the leaves land on the ground?

• gravity
• friction
• air pressure
• mass

Tags

NGSS.MS-PS2-4

A pencil falls off of a desk. What moves the pencil toward the floor?

• mass

• friction

• gravity

• speed

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

4 cars are at the starting line of a race. Which car will require the most force to start moving?

• car with mass of 1200 kilograms

• car with mass of 1500 kilograms

• car with mass of 1700 kilograms

• car with mass of 2000 kilograms

Tags

NGSS.MS-PS2-2

A model car travels 20 meters in 15 seconds. How many meters will it travel in 45 seconds?

• 0.4m

• 25m

• 30m

• 60m

Tags

NGSS.MS-PS3-1

A swimmer is moving at a speed of 2.0 meters/second. When will they hit 100 meters?

• 20 minutes

• 50 minutes

• 100 minutes

• 200 minutes

Which is a correct statement about the object shown in Graph W?

• The object speeds up during the trip.

• The object slows down during the trip.

• The object travels at a constant speed during the trip.

Tags

NGSS.MS-PS3-1

What was the average speed of a car that traveled 180 miles in 3 hours? (speed = distance÷time)

• 55 mph

• 60 mph

• 180 mph

• 540 mph