When matter changes from one state to another, what do we call this process?

A.

a physical change

B.

a nuclear change

C.

an explosion

D.

chemical bonding

To test the resilience of its bumper during low-speed collisions, a 4 060-kg automobile is driven into a brick wall. the car's bumper behaves like a spring with a force constant 8.00 106 n/m and compresses 3.72 cm as the car is brought to rest.

A 1500 kg car starts at rest and speeds up to 3.0 m/s. The gain in kinetic energy is 6750 J. We define efficiency as the ratio of output energy in this case kinetic energy) to input energy. If this car's efficiency is 0.30.

The earth makes () around the sun in it's ()

Wich of yhe following is true a mass drpendent on gravity and weight is dependent on gravity

Suppose you fire a rifle bullet at1600 m/s in a shooting gallery and hear the gong on the target ring 0.723 seconds later.

How long does it take a car to travel 450 km at 75 km/hr

A free-falling golf ball strikes the ground and exerts a force on it

What are the main activities involved in studying physics?

What is the energy that moves your arms and legs

A moving object can be in equilibrium. Explain.