Question

UP
17. A driving force of 200N is needed for a car of mass 800 kg to travel road at a speed of 20
m/s. what power is required to maintain the car at this specd up a gradient in which the
car rises im for each 8m of travel the road :
(A) 6000
(B) 7200W
(C) 20000 W
(D) 24000 W​

Answer 1

Answer:

7200W

Explanation:

Mark as brainlist

Answer 2

Answer: D

Explanation:

First draw and label a free-body-diagram of the car going up the slope.

Equate:

F = f + WsinΘ, where sinΘ = 1/8.

F = 200 + (800)(9.81)(0.125)

F = 1181N

P = FV

P = 1181(20)

P = 23600 W (rounded up to 24000 W)