science

posted by .

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 7.1 m/s when going down a slope for 4.0 s?

• science -

Average acceleration is given by the expression
(final velocity - initial velocity) / time
Note the use of the word velocity instead of speed, since the direction of the movement is important.

In the case of a skiier going downhill, the direction of the speed does not change, so the average acceleration reduces to:
(7.1-0 m s-1)/4s = ? m s-2

Similar Questions

1. Physics

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 8.0 m/s when going down a slope for 5.0 s?
2. Physics

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 5.8 m/s when going down a slope for 2.8 s?
3. physics

(a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 8.86 m/s when going down a slope for 3.30 s?
4. College Physics

(a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 9.62 m/s when going down a slope for 4.00 s?
5. physics

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 5.59 m/s when going down a slope for 2.79 s?
6. physics

(a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 11.3 m/s when going down a slope for 3.72 s?
7. gen physics

(a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 8.02 m/s when going down a slope for 4.28 s?
8. physics

(a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 8.02 m/s when going down a slope for 4.28 s?
9. physics

what is the magnitude of the average acceleration of a skier who starting from rest, reaches a speed of 8.0 m/s when going down a slope for 5.0 sec?
10. physics

(a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 10.5 m/s when going down a slope for 3.18 s?

More Similar Questions