Unit 7: Force and Motion Review

This graph represents the motion of a car while driving over a short distance. Which statement accurately describes the motion of the car in this graph?

• It is going forwards slow, then it is going forwards fast.

• It is going forwards fast, then it is going forwards slowly.

• It is going backwards fast, then it is going backwards slowly.

• It is going backwards slow, then it is going backwards fast.

Tags

NGSS.MS-PS3-1

Which statement accurately describes John and Caroline's walk as shown in the graph?

• They walked quickly, then they were still, then they walked slowly.

• They walked forward fast, then they were still, then they walked backward slow.

• They walked in one direction, then they were still, then they walked in the opposite direction.

• They walked faster and faster until they walked at a constant rate, then they walked slower and slower.

John and Caroline go out for a drive one day. This graph represents the distance they traveled over time. During what part of their drive are John and Caroline not moving?

• From 0 to 0.75 hours

• From 1.25 to 2.0 hours

• From 0.75 to 1.25 hours

• They are moving the entire time.

Tags

NGSS.MS-PS3-1

The graph represents the distance a car travels over time while on the highway. Which statement about the car's trip is accurate?

• The car travels at a constant speed throughout the trip.

• The car stops for a period of time during the trip.

• The car accelerates continuously throughout the trip.

• The car's speed varies at different times during the trip.

Tags

NGSS.MS-PS3-1

If the mass of a baseball was increased by 50%, but the same force was applied as to a lighter baseball, which of the following would be true regarding the baseball's acceleration?

• The acceleration of the baseball would be the same as the lighter baseball.

• The acceleration of the baseball would be greater than the lighter baseball.

• The acceleration of the baseball would be less than the lighter baseball.

• There would be no acceleration of the baseball.

Tags

NGSS.MS-PS2-2

Imagine you are on the top of a mountain with four basketballs of different masses. If the basketballs rolled down the hill, which one would supply the greatest force at the bottom of the mountain, assuming their velocities were equal at the bottom?

• 100 kilogram basketball

• 200 kilogram basketball

• 300 kilogram basketball

• 400 kilogram basketball

Tags

NGSS.HS-PS2-1

What must Matt do to ensure he and Jayden arrive at their destination at the same time if Matt's wagon has a mass two times greater than Jayden's?

• Jayden should slow down so Matt can catch up.

• Matt must use half as much force to push his cart.

• Matt must use twice as much force to push his cart.

• Matt and Jayden will use the same force, but Matt will take bigger steps.

Tags

NGSS.MS-PS2-2

In which situation is the object experiencing balanced forces?

• A girl swings on a swing at the playground.

• A car brakes as it approaches a traffic light.

• A sled speeds up as it slides down a snow-covered hill.

• A sky diver reaches terminal velocity when he stops accelerating.

The Smith family is traveling in their car at 50 km/h due east. Mr. Smith is using cruise control to maintain a constant speed. Describe the net force acting on the Smith car.

• Net force equals zero.

• Net forces are unbalanced.

• Net force is positive and to the east.

• There is no way to determine net force.

Consider the free body diagram. If the sum of the tension forces is equal to the force of gravity, which description BEST applies?

• A book is at rest on a tabletop.

• A physics student rests a backpack upon one shoulder.

• A girl hangs by both hands, motionless, from a trapeze.

• A girl falls slowly to Earth while strapped to a parachute.

Tags

NGSS.HS-PS2-1