Chapter 2 Review

A ball is moving on a frictionless, horizontal track. What will happen to the ball as it continues to move along the track?

• The ball will gradually come to a stop as it loses energy.

• The ball will maintain a constant velocity.

• The ball will speed up as it moves along the track.

• The ball will only maintain its speed if it is moving uphill.

Tags

NGSS.MS-PS3-5

Which object has the most inertia?

• a 0.002-kg butterfly flying at 3 m/s

• a 0.2-kg tennis ball moving at 15 m/s

• a 6-kg medicine ball rolling at 2 m/s

• a 15-kg bicycle at rest

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Maya walks with a piece of ticker tape attached to herself with the tape timer running, and produces the tape shown below.

• constant velocity.

• positive acceleration.

• negative acceleration.

• constant velocity, then negative acceleration.

Tags

NGSS.MS-PS3-5

A physics teacher wants to verify if a student is maintaining a constant velocity while jogging. What should the teacher do?

• Check the student's velocity at regular intervals to ensure it remains constant.

• Calculate the total distance covered and the total time taken to find the average velocity.

• Measure the initial and final velocities to confirm they are identical.

• Use a measuring tape to determine the student's stride length and time one complete stride.

What can be inferred about the forces on a cart moving with a constant negative acceleration?

• The cart is moving on a frictionless surface.

• The cart is accelerating uphill.

• There is a net force acting in the opposite direction of motion.

• The cart will stop on its own without any force.

Tags

NGSS.MS-PS2-2

A student is conducting an experiment to explore how changing the net force affects an object's acceleration. What should she do?

• Change both the force applied to the object and the object's mass simultaneously.

• Alter the object's mass while keeping the applied force constant.

• Vary the force applied to the object while maintaining a constant mass.

• Ensure both the applied force and the object's mass remain unchanged as it moves on a flat surface.

Tags

NGSS.MS-PS2-2

A student is holding a ball that has a weight of 15 N in his hand while standing on the ground. The student claims that the ball must be pulling Earth with a force of 15 N. Is his claim

• false because balls do not exert forces.

• false because Earth is much larger than the ball.

• true because the ball has more mass than Earth.

• true due to Newton’s third law of action-reaction.

Which diagram correctly shows the force exerted by a 5-kg mass on the table?

• [Diagram a]

• [Diagram b]

• [Diagram c]

• [Diagram d]

Tags

NGSS.MS-PS2-1

Two friends are having a "tug-of-war" on a smooth ice rink. One friend has a mass of 80 kg and is wearing ice skates, while the other friend has a mass of 65 kg and is wearing rubber boots. The friend most likely to win will be

• the 65-kg friend because they can exert a stronger pull on the 80-kg friend.

• the 80-kg friend because they can exert a stronger pull on the 65-kg friend.

• the 65-kg friend because they have a higher frictional force with the ice.

• the 80-kg friend because they have a higher frictional force with the ice.

Tags

NGSS.MS-PS2-2

A high jumper clears a vertical height of 2.0 m. A physics student claims that the jumper must have taken off with a speed of 6.3 m/s. The student can verify this claim by using

• conservation of energy.

• the principle of air resistance.

• Newton’s first law of motion.

• the principle of momentum.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

NGSS.MS-PS3-2