Home
Class 11
PHYSICS
Total distance traveled by bike is 50m a...

Total distance traveled by bike is 50m and Total time is taken to travel distance is 5 second then find average speed.

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
The linear momentum of 2 bodies is 0 initially. Since gravitastioN/Al force is interN/Al fiN/Al momentum is also zero.
So, `(10kg)v_1=(20kg)v_2`
or `v_1=2v_2` ……….i
`Since P.E. is conserverd
intial P.E.=(-6.67xx10611xx10xx20)/1`
-13.34xx10^-9J`
When separation is 0.5 m`
`rarr13.34xx10^-9+0`
`=(-13.34xx10^-9)/(1/2)+(1/2)xx10v_1^2+(1/2)xx20v_2^2` ........2
`rarr -13.34xx10^-9=26.68xx10^-9+5v_1^2+10v_2^2`
`rarr -13.34xx10^-9=26.68xx10^-9+30v_2^2`
`rarr v_2^2=(-13.34xx10^-9)/30`
=4.44xx10^-10`
`rarr v^2=2.1xx10^-5m/s`
So, `v_1=4.2x10^-5`
Promotional Banner

Similar Questions

Explore conceptually related problems

A man travels half time of its journey with speed of 5m/s and for remaining half time he moves half of its total distance travelled, with speed of 3 m/s and remaining half distance with speed of 6 m/s. Find out the average speed of the man?

A ball is dropped from the roof of a tower height h . The total distance covered by it in the last second of its motion is equal to the distance covered by it in first three seconds. The value of h in metre is (g=10m//s^(2))

The distance travelled by an object in a specified direction is

If distance travelled by particle is zero then its displacement is …... .

A particle travels first half of the total time with speed v_1 and second half time with speed v_2. Find the average speed during the complete journey.

The distance travelled by a particle in time t is given by s=(2.5m/s^2)t^2 . Find a. the average speed of the particle during the time 0 5.0 s, and b. the instantaneous speed ast t=5.0 is

Figure shows a string of linear mass density 1.0g cm^(-1) on which a wave pulse is travelling. Find the time taken by pulse in travelling through a distance of 50 cm on the string. Take g = 10 ms^(-2)