Home
Class 8
PHYSICS
A bike starting from rest picks up a vel...

A bike starting from rest picks up a velocity of 72 km `h^(-1)` over a distance of 40 m. Calculate its acceleration.

Text Solution

Verified by Experts

Given, u = 0
`v=72 kmh^(-1) = 72 xx (5)/(18)=20ms^(-1)`
`s=40m`
using `v^(2)-u^(2)=2as`
`(20)^(2)-0=2a xx 40`
`a=(400)/(2xx40) =5 ms^(-2)`
Promotional Banner

Similar Questions

Explore conceptually related problems

A bike startingh from rest picks up velocity of 72 km h^(-1) over distance of 40m. Calculate its accleration

If a disc starting from rest acquires an angular velocity of 240 "rev min"^(-1) in 10 s, then its angularw acceleration will be

A train starting from rest attains a velocity of 72 km//h in 5 minutes . Assuming that the acceleration is uniform , find (i) the acceleration and (ii) the distance travelled by the train for attaining this velocity .

A car starts from rest and accelerates uniformly to a speed 50ms^(-1) over a distance of 250m . Find the acceleration and time taken by the car to cover this distance.

A car acquires a velocity of 72 km h^(-1) in 10 s starting from rest. Calculate (i) the acceleration (ii) the average velocity

A cyclist acceleration from rest to a velocity of 72 km hr^(-1) in 10sec. If the cyclist is in straight track the acceleration of the cyclist is:

A car of mass 1000kg accelerates uniformly from rest to a velocity of 54km//h in 5 seconds. Calculate (i) its acceleration (ii) its gain in KE (iii) average power of the engine during this period.

A bicycle increases its velocity from 10km/h to 15 km/h in 6 seconds.Calculate its acceleration.