2 3 4 T(s) During what time interval is the acceleration negative? From t = 7 s to t = 9 s The acceleration is never negative. From t = 0s to t = 3 s From t = 3 s to t = 7 s From t = 0 s to t = 9 s 3. 2. Vy (m/s)
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- During a walk on the Moon, an astronaut accidentally drops his camera over a cliff. It leaves his hands with zero speed, and after 2.00 s it attains a velocity of 9.10 m/s downward. How far has the camera fallen after 5.70 s? anser in mA sprinter runs a 100 m dash in 12.0 s. She starts from rest with a constant acceleration ay for 3.0 s and then runs with constant speed for the remainder of the race. What is the value of ay?At time t = 0, a car moving along a straight line has a velocity of 16 m/s. It slows down with an acceleration given by -0.50t, in m/s for t in seconds. It stops at t = O 64 s O 32 s 16 s O 8s
- A car and a truck start from rest at the same instant with the car initially at some distance behind the truck. The truck has a constant acceleration of 1.20m/s² and the car acceleration of 1.80m/s?. The car overtakes the truck after the truck has moved 45m. Find the time it took the car to overtake the truck. 6.12 secs B 8.66 secs 5.00 secs 7.07 secs26. At time t = 0 a car has a velocity of 16 m/s. It slows down with an acceleration given by -0.50t, in m/s² for t in seconds. By the time it stops it has traveled: A. 15 m В. 31 m С. 62 m D. 85 m Е. 100 m ans: DA brick is dropped from the roof of a tall building. After it has been falling for a few seconds, it falls 41.0 mm in a 1.00-ss time interval.What distance will it fall during the next 1.00 s? Ignore air resistance.
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