4 What will happen to the temperature of a substance if its kinetic energy decreases? a. decreases b. increases c. stays the same d. all of the above
5. When the temperature of a strip of iron is increased, what will happen to its length?

Answer (4):

A. decreases

Explanation:

kinetic energy = temperature. so if kinetic energy increases, temperature increases

Answer (5):

it will increase.

Explanation:

temperature = volume. so if temperature increases, volume increases

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

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