Author Question: When a car is braked to a stop, its kinetic energy is transformed into a. stopping energy b. ... (Read 72 times)

strangeaffliction · **on:** Jul 28, 2018

When a car is braked to a stop, its kinetic energy is transformed into
a. stopping energy
b. potential energy
c. heat energy
d. energy of motion

Question 2

A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 24 m/s west, and the total acceleration of the car is 2.5 m/s2 53 north of west. Which of the following is correct?
a. R = 0.29 km, and the car's speed is increasing.
b. R = 0.23 km, and the car's speed is decreasing.
c. R = 0.23 km, and the car's speed is increasing.
d. R = 0.29 km, and the car's speed is decreasing.
e. R = 0.29 km, and the car's speed is constant.