Question

A point mass starts moving Ina straight line with constant acceleration a at a time t after the beginning of motion the accler​

Answer 1

Answer:

Correct option is

B

(2+

2

)t

let s be the distance travled in time t

s=

2

at

2

…(1)

let t

1

be the time in which it comes to its initial position

using equation of motions=ut+

2

at

2

now u=at,t=t

1

,s=−s,a=−a

−s=(at)t

1

−

2

at

1

2

s=−att

1

+

2

at

1

2

…(2)

using (1)&(2)

t

1

2

−2tt

1

−t

2

solving t

1

=(

2

+1)t

t

0

=t

1

+t

t

0

=(

2

+2)t

Answer 2

Explanation:

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