AP Physics 1· difficulty 1/5
A force is applied to a moving object opposite to its motion. Which must be true?
Object speeds up.
Object reverses immediately.
Net force is zero.
Object slows down.
Explanation
Force opposite to motion produces deceleration; the object slows down (and may eventually reverse if force persists).
Want 10 more like this — adaptive to your weak spots?
A car rounds a curve of radius 50\text{m} at 20\text{m/s}. What is its centripetal acceleration?…
chevron_rightA car traveling at 20 m/s rounds a flat curve of radius 80 m. The minimum coefficient of static friction needed is (g = 10 m/s²)…
chevron_rightTwo children pull on opposite ends of a rope, each with 200\text{N}. The rope is in equilibrium. What is the tension in the rope?…
chevron_right