A car drives up a straight hill at a constant
speed of 60 kilometers per hour. A truck
drives over the crest of the hill at a constant
speed of 60 miles per hour.
What is the net force on the car and on the
truck?
1. both not zero
2. not zero; zero
3. both zero
4. zero; not zero
2 answers
It's absolutely not answer 1. could it be 3.??
No. The answer is 4.
A net centripetal force is needed to allow the car to go over the crest of the hill at constant speed.
A net centripetal force is needed to allow the car to go over the crest of the hill at constant speed.
1 answer