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A 1.5 kg block placed on a frictless ori...

A 1.5 kg block placed on a frictless orizontal floor is pulled by a force F Direction of the force is unchanged and its magnitude is incrcresaed with time according to the equation F =0.5 t n where t denotes time in second . Which of the following is /are correct for subsequunt motion after `t=0` s? [`g=10m//s^(2)`]

A

The block leaves the flor at the instant t=50s.

B

Acceleration of the block at the innstant t=40s. `8m//s^(2)` towards the right .

C

Normal reaction from the ground on the block at the instant t=50 s is 8 N.

D

Acceleration vector of the block at the instant t=80s. Is `(1.3hati +6hatj ) m//s^(2)`.

Text Solution

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The correct Answer is:
a,d
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