Question

At a stop light, a truck travelling at 15 m/s passes a car as it starts from rest. The truck travels as constant velocity and the car accelerates at 3 m/s^2. How much time does the car take to catch up to the truck? a. 25 s b. 20 s c. 15 s d. 10 s e. 5 s Starting at time t = 0, an object moves along a straight line. Its coordinate in meters is given x = 75t - t^3, where t is in seconds. When it momentarily stops its acceleration is: a. 0 b. -30 m/s^2 c. -73 m/s^2 d. -9.8 m/s^2 e. 9.2 times 10^3 m/s^2 A stone is released from rest form the edge of a cliff 734 m above the ground. Neglecting resistance, the speed of the stone, just before striking the ground, is: a. 43 m/s b. 61 m/s c. 120 m/s

Help Please

Answer 1

!) ,hatとHe st- 15 210 see 75-3to- V 2 120 mls