Question

A Block of Mass 500 g is pulled from rest on a horizontal frictionless bench by a steady force F and reaches a speed of 8 m/s in 2s - Calculate the Acceleration and the Value of F

Answer 1

Answer: GIVEN Mass of block = 500 g

Initially at rest

Distance travelled = 8 m

Time = 2 seconds.

TO FIND

a) Acceleration of block

b) Value of force

We have,

• Distance travelled (s) = 8 m

• Initial speed (u) = 0

• Time (t) = 2 s

• Mass (M) = 500 g

We will use 2nd equation of motion :

b) We now have,

• Mass of block (M) = 500 g = 0.5 kg

• Acceleration of block (a) = 4 m/s²