Question

1. the force of a moving object is called momentum. the momentum of an object is proportional to its weight and speed. the more momentum it has, the more force it has. so if there were two cars, both the same model, and one of the cars was traveling 30 mph faster than the other, which car has more force?

a. the slower car
b. the faster car
c. both cars have equal force
d. none of the above

1. gravity ____ your kinetic energy when you are driving uphill and ____ it when you are driving downhill.

a. increases, decreases
b. stops, increases
c. decreases, increases
d. none of the above

Explanation:

Question 5

Momentum (force of moving object) is proportional to weight and speed. Two same - model cars have the same weight. The faster car has higher speed, so it has more momentum (force).

Kinetic energy is related to motion. When driving uphill, gravity opposes the motion, converting kinetic energy to potential energy, so gravity decreases kinetic energy. When driving downhill, gravity aids the motion, converting potential energy to kinetic energy, so gravity increases kinetic energy.

Answer:

B. The faster car

Question 6