Question

A body is left free on a frictionless inclined plane as shown in the figure. It takes 2 s to reach the bottom of the plank. What time would it take to slide from point A to point B?

Answer 1

Answer:

Please see the formula

Step-by-step explanation:

Acceleration is a constant = a;

using the equation of motion,

s=ut+

2

1

at

2

40=0+

2

1

a4

2

i.e.

a=5cms

−2

Using this with s=10,

10=0+

2

1

5t

2

t

2

=4

t=2seconds

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