Physics Fall Exam 2024

A sports car and a minivan run out of gas and are pushed to the side of the road. Which is easier to push, and why?

• Minivan because it has more mass and therefore more inertia

• the minivan, because it has less mass and therefore less inertia

• the sports car, because it has more mass and therefore more inertia

• the sports car, because it has less mass and therefore less inertia

Tags

NGSS.MS-PS2-2

According to Newton’s first law of motion, what will an object in motion do when no external force acts on it?

• come to a stop

• move at the same velocity

• speed up

• change direction

Briana swings a ball on the end of a rope in a circle. The rope is 1.5 m long. The ball completes a full circle every 2.2 s.

What is the tangential speed of the ball?

• 0.68 m/s

• 2.1 m/s

• 4.3 m/s

• 9.2 m/s

A twirler’s baton is 0.76 m long and spins around its center. The end of the baton has a centripetal acceleration of 47.8 m/s2.

How long does it take the baton to complete one spin?

• 0.31 s

• 0.56 s

• 4.3 s

• 70 s

Tags

NGSS.HS-PS2-1

The gravitational force between two objects is 1600 N. What will be the gravitational force between the objects if the distance between them doubles?

• 400 N

• 800N

• 3200N

• 6400N

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NGSS.MS-PS2-4

The acceleration due to gravity on Earth is 9.8 m/s2. What is the weight of a 75 kg person on Earth?

• 9.8N

• 75N

• 85N

• 735N

Tags

NGSS.MS-PS2-4

What is the horizontal acceleration of a ball that is launched horizontally with a velocity of 5.6 m/s?

• –9.8 m/s2

• 0 m/s2

• 5.6 m/s2

• 9.8 m/s2

Ronnie kicks a playground ball with an initial velocity of 16 m/s at an angle of 40° relative to the ground. What is the approximate horizontal component of the initial velocity?

• 0.64 m/s

• 0.77 m/s

• 10.3 m/s

• 12.3 m/s

Tags

NGSS.MS-PS3-1

A car travels straight for 20 miles on a road that is 30° north of east. What is the east component of the car’s displacement to the nearest tenth of a mile?

• -17.3 miles

• -10.0 miles

• 10.0 miles

• 17.3 miles

On an ice skating rink, a girl of mass 50 kg stands stationary, face to face with a boy of mass 80 kg. The children push off of one another, and the boy moves away with a velocity of +3 m/s.

What is the final velocity of the girl?

• –1.9 m/s

• +1.9 m/s

• –4.8 m/s

• +4.8 m/s

Tags

NGSS.MS-PS2-1