Question

5. A Car of mass 1000kg is driven from it's initial

state with uniform acceleration and reaches a
Speed of 30km/h in 10 second find
1 ). Force exerted by the engine.
2). the power in killo watts (kw)

Answer 1

1). To find the force exerted by the engine, you can use the equation: force = mass x acceleration. If the car has a mass of 1000 kg and accelerates uniformly to a speed of 30 km/h in 10 seconds, you can use the equation: force = 1000 kg x (30 km/h / 10 s) = 3000 N.

2). To find the power in kilowatts, you can use the equation: power = force x velocity. In this case, you can use the force you found above and the final velocity of the car (30 km/h) to calculate the power: power = 3000 N x (30 km/h x 1000 m/km) / (3600 s/h) = 8.33 kW.