Question

A box of mass 2 kg travels at 3 m/s constant speed when it is being pushed horizontally
on a rough surface by a 4 N force. What is the acceleration of the box when the force
increased to 6 N ?

Answer 1

Answer:

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Explanation:

F=ma

Since F is constant, a is also constant.Therefore from Kinematics:

S=ut+

2

1

at

2

10=0+

2

1

a×4 (Since object is at rest initially)

a=

2

10

=5m/s

2

F=2×5=10N