Question

A car of mass 1500 kg has a constant speed of 40 m/s when travelling up a hill inclined at sin a=1/15 to the horizontal with the engine’s power is 50 kW. The car moves down the same hill at the speed of 25 m/s while the engine working at 30kW. Find the acceleration of the car when it moves downhill if given resistance, R=v^2/k,
where k is a constant and v is the velocity of car.

Answer 1

sooo this the question whichs bothering u right.

Answer 2

yes. what should i do first?

Answer 3

first off i have to confirm one thing this is grade 8 level

Answer 4

right?

Answer 5

lianardo-leBong is typing a reply…

Answer 6

5

Answer 7

sorry

Answer 8

please ans my ques pleaseee

Answer 9

i am trying to grt help okay dont give up.

Answer 10

fool cld u help her bro.