PSCI Force and Momentum Review

A force of 80 Newtons is applied to a rabbit resulting in an acceleration of 2 m/s². What force would need to be applied to this mass to cause an acceleration of 30 m/s²?

• 1200 N

• 5.33 N

• 2400 N

• 40 N

Ignoring friction, what is the mass of a brick accelerating at 6 m/sec² to which an unbalanced force of 11 Newtons has been applied?

• 1.83 kg

• 66 kg

• 0.545 kg

• 396 kg

Ignoring friction, what is the acceleration of a 65 kg hog which is acted upon by an unbalanced force of 743 N?

• 11.4 m/s²

• 48295 m/s²

• 0.0875 m/s²

• 808 m/s²

1. The results of an investigation with marbles are shown in the table. Friction and air resistance can be ignored.

The data for which marble fails to conform with the laws of motion as defined by Newton’s second law?

• Josh

• Clarabelle

• Zack

• Ophelia

Two balls collide in a closed system. The initial and final mass and velocity quantities for each ball are provided in the illustration.

Because momentum is conserved, it can be concluded that the final velocity of the smaller ball will be which of the following?

• 54 m/s

• 36 m/s

• 18 m/s

• 108 m/s

1. Initial and final velocities of objects in two interacting systems are provided in the table, along with the masses of the objects.

Calculate the final velocity for system 2.

• 8.89 m/s

• 15.6 m/s

• 220 m/s

• 140 m/s

1. A larger box slides across a frictionless surface and collides with and sticks to a smaller, stationary mass as shown in the illustration.

Because momentum is conserved, the final velocity of the two boxes together would be closest to which of the following

• 12.5 m/s

• 100 m/s

• 60 m/s

• 15 m/s

1. The results of tests on four parachute designs are provided in the table.

The design challenge for this parachute was to find a parachute that reduced, as much as possible, the force felt by a falling body colliding with the ground. According to the data, which parachute best met the challenge?

• Stevie

• Pat

• Angel

• Ashley

A sugar glider and a flying chipmunk both have a mass of 0.344 kg. The sugar glider is moving 1.33 m/s when it collides with the stationary flying chipmunk. Explain what happens next.

• 0.665 m/s

• 1.33 m/s

• 0.915 m/s