Answer:
5.05 ms⁻²
Explanation:
(check the graph)
when the block is pulled with a force , force of kinetic friction (Fr) appears resisiting the motion.
Fr = μR = μ*mg (where g- gravitational acceleration = 9.8 ms⁻²)
= 0.25 * 2 * 9.8
=4.9 N
According to Newton's second law of motion
we can apply F = ma to the motion assuming the block is moving right
F = ma (a - acceleration)
15 - 4.9 = 2*a
a = 5.05 ms⁻²
