# AP Physics

posted by .

6.
a)A 1260 kg car accelerates uniformly from rest to 4.65 m/s in 2.6 s.
Find the work done on the car in this time.Answer in units of J.

b)Find the average power delivered by the engine in the first 1.768 s.

c)Find the instantaneous power delivered by the engine at t2 = 1.274s.

• AP Physics -

a. a = (Vf - Vi)/t,
a = (4.65 - 0) / 2.6 = = 1.788m/s^2.

d = 0.5at^2,
d = 0.5 * 1.788 (2.6)^2 = 6.04m.

F = ma = 1260 * 1.788 = 2252.88N.

W = Fd = 2252.88 * 6.04 = 13607J.

b. P = Fd/t=2252.88 * 6.04/1.768=7696.

## Similar Questions

1. ### Physical science

What formula's should I use to solve these problems?
2. ### Physical science

What formula's do I use to solve these problems?
3. ### Physical science

I have done this problem over and over again, but I still keep getting it wrong. What do I need to do?
4. ### physics

Part 1 A 1260 kg car accelerates uniformly from rest to 4.65 m/s in 2.6 s. Find the work done on the car in this time.Answer in units of J. Part 2 Find the average power delivered by the en- gine in the first 1.768 s. Answer in units …
5. ### Physics

part 1 A 1760 kg car accelerates uniformly from rest to 8.8 m/s in 4.52 s. Find the work done on the car in this time. Answer in units of J. part 2 Find the average power delivered by the engine in the first 1.808 s. Answer in units …
6. ### Physics

part 1 A 1760 kg car accelerates uniformly from rest to 8.8 m/s in 4.52 s. Find the work done on the car in this time. Answer in units of J. part 2 Find the average power delivered by the engine in the first 1.808 s. Answer in units …
7. ### physics

A 1.50 103-kg car starts from rest and accelerates uniformly to 18.5 m/s in 11.3 s. Assume that air resistance remains constant at 400 N during this time. (a) Find the average power developed by the engine. 1 W (b) Find the instantaneous …