What is the mass of a steel ball, plastic ball, and a golf ball?

Suppose an automobile has 2000 J of kinetic energy. When it moves at twice the speed, what will be its kinetic energy?

How much work must be done to stop an 1 800kg vehicle travelling at 30 m/s?

How much heat (in kj) is required to warm 11.0 g of ice, initially at - 13.0 ∘c, to steam at 111.0 ∘c? the heat capacity of ice is 2.09 j/g⋅∘c and that of steam is 2.01 j/g⋅∘c?

Would the density of a person be the same on the surface of the earth and on the surface of the moon?

What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 29.0 km/h and the coefficient of static friction between tires and track is 0.

Which devices might use electromagnets? pick all that apply. 1. audio speakers 2. plastic combs 3. trains 4. doorbells 5. revolving chairs 6. cranes

Match each type of line or symbol, common to geologic maps, to its description. 1. Fault Line A. very dark and thick line 2. Contact Line B. very light and thin line 3. Axis Fold C. look like a stubby T 4. Strike and Dip D.

You drop your backpack out of a window from a height of 8.3 m. What is the impact speed of your backpack? A. 163 m/s B. 1.2 m/s C. 21.3 m/s D. 12.8 m/s

What is the kinetic energy of a car that has a mass of 1,600 kg and is moving at 22 m/s?

Which is an example of a transverse wave? A. sound B. electromagnetic C. water D. seismic waves