Solve it without with simple math. Without using integration and differentiation height of the stair is 4.5m. Calculate his power.O A 70 kg man runs up a long flight of stairs in 4 s. The verticalNUMERICAL QUESTIONS70 kg man runs up a long flight of stairs in 4 s. The verticalbeight of the stair is 4.5m. Calculate his power.(P = 7.7x10 Watts)O A body of mass 2.0 kg is dropped from a rest position 5m abovethe ground. What is its velocity at height of 3.0 m above theground ?(v = 6.3 m s')A man pulls a trolley through a distance of 50m by applying aforce of 100N which makes an angle of 30° with horizontal.Calculate the work done by the man.(4330 J)

1. Given : m = 70 kg t = 4 s h = 4.5 m

NUME O A 70 kg man runs up a long flight of stairs in 4 s. The vertical height of the stair is 4.5m. Calculate his power. (P = 7.7x10 Watts) %3D O A body of mass 2.0 kg is dropped from a rest position 5m above the ground. What is its velocity at height of 3.0 m above the ground ? (v = 6.3 m s') OA man pulls a trolley through a distance of 50m by applying a force of 100N which makes an angle of 30° with horizontal. Calculate the work done by the man. (4330 J)

NUME O A 70 kg man runs up a long flight of stairs in 4 s. The vertical height of the stair is 4.5m. Calculate his power. (P = 7.7x10 Watts) %3D O A body of mass 2.0 kg is dropped from a rest position 5m above the ground. What is its velocity at height of 3.0 m above the ground ? (v = 6.3 m s') OA man pulls a trolley through a distance of 50m by applying a force of 100N which makes an angle of 30° with horizontal. Calculate the work done by the man. (4330 J)

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter6: Energy Of A System

Section: Chapter Questions

Problem 8OQ: If the net work done by external forces on a particle is zero, which of the following statements...

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