# physics

posted by .

A 42-kg pole vaulter running at 14 m/s vaults over the bar. Her speed when she is above the bar is 1.7 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar.

• physics -

KE at beginning: 1/2 m 14^2
KE at top: 1/2 m 1.7^2

Ke at beginning=KE at top+PE at top
1/2 m 14^2=1/2 m 1.7^2 + mgh

solve for h.

• physics -

9.853m

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### Physics

Two pole-vaulters just clear the bar at the same height. The first lands at a speed of 8.50 m/s, and the second lands at a speed of 8.80 m/s. The first vaulter clears the bar at a speed of 1.50 m/s. Ignore air resistance and friction …
2. ### physics

A 52-kg pole vaulter running at 12 m/s vaults over the bar. Her speed when she is above the bar is 0.7 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar.
3. ### Physics

A pole-vaulter just clears the bar at 5.34 m and falls back to the ground. The change in the vaulter's potential energy during the fall is -3.8E3 J. What is his weight?
4. ### Physics

A 51.8 kg pole vaulter running at 11.5 m/s vaults over the bar. Her speed when she is over the bar is 1.26 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar
5. ### physics

A pole-vaulter just clears the bar at 4.07 m and falls back to the ground. The change in the vaulter's potential energy during the fall is -3900 J. What is his weight?
6. ### physics

A 58.0 kg pole vaulter running at 8.9 m/s vaults over the bar. If the vaulter's horizontal component of velocity over the bar is 1.0 m/s and air resistance is disregarded, how high was the jump?
7. ### Physics

65 kg pole vaulter running at 10.2 m/s vaults over the bar. if height of bar was set at 4.96 m how fast was he moving as he cleared the bar
8. ### Physics

A pole-vaulter just clears the bar at 4.42 m and falls back to the ground. The change in the vaulter's potential energy during the fall is -3800 J. What is his weight?
9. ### Physics

1. A 55.0 kg pole vaulter running at 11.0 m/s vaults over the bar. Assuming that the vaulter's horizontal component of velocity over the bar is 1.0 m/s and disregarding air resistance, how high was the jump (include units)?
10. ### Physics

A 52.4 kg pole vaulter running at 10.8 m/s vaults over the bar. The acceleration of gravity is 9.81 m/s2 . If the vaulterâ€™s horizontal component of ve- locity over the bar is 0.60 m/s and air resis- tance is disregarded, how high …

More Similar Questions