Circular Motion
Gravitation
Momentum
100
The direction that the net force points on an object moving in a circle at a constant speed.

Where is towards the center of the circle ("centripetal")?

100

The direction of the gravitational force between two objects. 

What is "towards each other" (attractive)?

100

The speed of a 4 kg object whose momentum has a magnitude of 12 kgm/s.

How fast is 3 m/s?
200

The magnitude of the centripetal acceleration of an object traveling at a speed of 3 m/s in a circle of radius 0.5 m.

How much is 18 m/s2?
200

The weight of a 10 kg object on a planet where the gravitational field strength is 4 m/s2.

How much is 40 N?

200

The change in momentum experienced by a 5 kg object that starts at rest and experiences a rightward 30 N force for 0.5 seconds.

How much is 15 kgm/s (or N*s) right?

300

The effect on an object's centripetal acceleration if speed is doubled and radius is quadrupled.

What is no change?

300

The magnitude of the force due to gravity between two objects, both being 4.7 x 106 kg, that are 438 meters apart.

How much is 0.0077 N?

300

The post-collision speed of a 2 kg cart and 1 kg cart that travel towards each other, each at 3 m/s, and stick together.

How fast is 1 m/s?
400

The magnitude of the centripetal force on a 200 g ball being swung in a circle on the end of an 0.8 m string, if the ball completes 3 full rotations every second.

How much is 57 N?
400

How the gravitational force between two objects will change if the mass of both are tripled and the radius is tripled.

What is "no change"?

400

The final velocity of a 5 kg cart that begins with a velocity of 2 m/s, left, and then experiences a rightward force of 40 N for 0.1 s.

What is 1.2 m/s, left?

500

An object weighs 48 N on Earth's surface. The gravitational force on that object when it is one full Earth radius away from Earth's surface.

How much is 12 N.
500

A 10 kg blue cart travels right with some velocity and a 5 kg blue cart travels left at 1 m/s. After the collision, the blue cart travels right at 0.3 m/s and the red cart travels right at 4.3 m/s.

The initial velocity of the blue cart.

What is 3 m/s, right.
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