Question

A "rocket car" is launched along a long straight track at = 0 . It moves with constant acceleration = 2.5 . At = 3.0 , a second car is launched with constant acceleration = 8.7. At what time does the second car catch up with the first one? How far have the cars traveled when the second passes the first?

Answer 1

A car starts from rest and travels for 4.2 s with a uniform acceleration of +1.9 m/s2. The driver then applies the brakes, causing a uniform acceleration of -1.6 m/s2. The breaks are applied for 1.60 s. How fast is the car going at the end of the braking period?

Answer 2

A sailboat starts from rest and accelerates at a rate of 0.19 m/s2 over a distance of 384 m.Find the magnitude of the boat's final velocity.