A car of mass m starts from rest and accelerates so that ins... — Physics | Mockzy

MediumPhysicspower

+4 / -1

A car of mass m starts from rest and accelerates so that instantaneous power delivered to the car has a constant magnitude P₀. The instantaneous velocity of this car is proportional to: (t is time)

t²

t¹ᐟ²

t⁻¹ᐟ²

A block of mass 5 kg slides down from rest on a rough surface having 30° inclina

Internal forces acting within a system of particles can alter:

More from power

Easy

Read both the statements carefully and choose the correct alternative. Assertion (A): The instantane

Easy

A quarter horse power motor runs at a speed of 600 r.p.m. Assuming 50% efficiency, the work done by

Easy

An elevator has a fully loaded mass of 1200 kg. It moves upward at a constant speed of 2.5 m s−1. If

Hard

A particle of mass m is driven by a machine that delivers a constant power k watt. If the particle s

Medium

A car is moving at a speed of 40 km/hr. If the car engine generates constant 7 kilowatt power, then

Medium

An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a veloci

Practice Physics Exams

Full-length mock tests with detailed analytics, rank, and percentile.

Browse Exams