If a 49 Kg sprinter can accelerate from a standing start to a speed of 11 m/s in 3s, what average power is generated in W?
If a 49 Kg sprinter can accelerate from a standing start to a speed of 11...
A 68 kg human sprinter can accelerate from rest to 10 m/s in 3.3 s . During the same time interval, a 25 kg greyhound can go from rest to 20 m/s. Part A What is the average power output of the human? Average power over a time interval Δt is ΔE/Δt. Express your answer to two significant figures and include the appropriate units. Part B What is the average power output of the greyhound? Express your answer to two...
a: A car is accelerating uniformly from a rest state at 4 m/s^2. What distance does the car travel for 3 secs? b: Two equal and opposite forces of 3.0 N act on an object. What is the unbalanced force on the object? c: A 2kg ball with a velocity of 3 m/s strikes a 1kg stationary ball and the two balls stick together and move after the collision. With what velocity will the balls move after the collision? d:...
3 A 1350-kg car is to accelerate from rest to a speed of 30.0 m/s in a time of 12.0 s as it climbs a 15° hill. Assuming uniform acceleration, what minimum power is needed to accelerate the car in this way? (Answer in kW)
A 52 kg sprinter, starting from rest, runs 60 m in 7.1 s with a constant acceleration. How much work does the sprinter do during the final 2.0 s of his run? What is the sprinter's average power output during the final 2.0 s ?
A world-class sprinter can reach a top speed (of about 11.6 m/s ) in the first 19.0 m of a race. What is the average acceleration of this sprinter? How long does it take her to reach that speed?
Using energy considerations, calculate the average force a 60.1-kg sprinter exerts backward on the track to accelerate from 2.57 m/s to 8.57 m/s in a distance of 21.2 m, if they encounter a headwind that exerts an average force of 31.2 N against him.
A world-class sprinter can reach the top speed of about 11.1 m/s in the first 17.0 M of a race. What is the average acceleration of the sprinter? how long does it take her to reach that speed?
A world-class sprinter can reach a top speed (of about 11.9 m/s ) in the first 20.0 m of a race. What is the average acceleration of this sprinter? Express your answer with the appropriate units. How long does it take her to reach that speed? Express your answer with the appropriate units.
15. Using energy considerations, calculate the average force a 60.0-kg sprinter exerts backward on the track to accelerate from 2.00 to 8.00 m/s in a distance of 25.0 m, if he encounters a headwind that exerts an average force of 30.0 N against him.
What average net force is needed to accelerate a 1380 kg car to a speed of 25 m/s in a time of 7 s? N