Which of the following is NOT a vector quantity? A a frictional force of 50 N against the tires

B an unstable star with a temperature of 100 B Kelvin

C a truck going up the hill at 40 mph

D a skydiver accelerating 9.8 m/s2 downward

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d