22$100 Question from H3You are traveling in a car that is moving at a velocity of 20 m/s. Suddenly, a car 10 meters in front of you slams on it’s brakes. At that moment, you also slam on your brakes and slow to 5 m/s. Does this represent positive or negative acceleration?
24$200 Question from H3A roller coaster car rapidly picks up speed as it rollsdown a slope. As it starts down the slope, its speedis 4 m/s. But 3 seconds later, at the bottom of theslope, its speed is 22 m/s. What is itsaverage acceleration?
30$500 Question from H3Julia is in a car with her father. The car is undergoing centripetal acceleration. What is happening to the car?A. The car is changing direction at a constant speed.B. The car is changing direction and speeding up.C. The car is stopping suddenly.D. The car is slowing down.