4. Two identical cars were made to move on two different su
the same amount of force. When they stopped, toy A that mo
iled floor travelled a longer distance than toy B that moved
wooden floor. Why is this so?
A. The effect of the friction on car A is less than on car
B. The effect of gravity on car A is greater than in car B
C. The effect of friction on car A is greater than on can
D. The effect of the force exerted by the Earth on the
not equal.​