# physics

posted by .

An athlete swings a 4.30 kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.790 m at an angular speed of 0.590 rev/s.

(a) What is the tangential speed of the ball?
m/s

(b) What is its centripetal acceleration?
m/s2

(c) If the maximum tension the rope can withstand before breaking is 81 N, what is the maximum tangential speed the ball can have?
m/s

• physics -

A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Half the crowd hopes the ball will clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 24.0 m/s at an angle of 45.0° to the horizontal.

## Similar Questions

1. ### physics

A person swings a 0.33 kg tether ball tied to a 5.4 m rope in an approximately horizontal circle. (a) If the maximum tension the rope can withstand before breaking is 11 N, what is the maximum angular speed of the ball?
2. ### Physics

A person swings a 0.33 kg tether ball tied to a 5.4 m rope in an approximately horizontal circle. (a) If the maximum tension the rope can withstand before breaking is 11 N, what is the maximum angular speed of the ball?
3. ### PHYSICS

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. The athlete is able to rotate the ball at the rate of 7.80 rev/s when the length of the chain is 0.600 m. When he increases the length to 0.900 m, he …
4. ### Physics

An athlete swings a 3.46 kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.55 m at an angular speed of 0.35 rev/s. What is the tangential speed of the ball?
5. ### physics

An athlete swings a 3.06 kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.82 m at an angular speed of 0.25 rev/s. What is the tangential speed of the ball?
6. ### Physics

Calculate the angular momentum of a 1.75 kg ball rotating on the end of a thin string in a circle of radius 3.5 and an angular speed of 11 rad /s. Treat the ball as a point.
7. ### Physics

An athlete swings a 3.06 kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.82 m at an angular speed of 0.25 rev/s. What is the tangential speed of the ball?
8. ### Physics

In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. In one instance, the radius of the circle is 0.608 m. At one …
9. ### Physics

An athlete swings a 2.01 kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.98 m at an angular speed of 0.44 rev/s. What is the tangential speed of the ball?
10. ### Physics

In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. In one instance, the radius of the circle is 0.622 m. At one …

More Similar Questions