the body is starting from rest after time 4s it acquires the acceleration of 2m/s^2.Find the displacement of the body by using the formula s= ut+1/2at^2.
Answers
Given that, the boy is starting from rest.
{ Initial velocity of the boy or the starting velocity of the boy i.e. u is 0 m/s }
The boy is starting from rest after time 4s it acquires the acceleration of 2 m/s².
Here, u = 0 m/s, t = 4 sec and a = 2 m/s².
Where, u = initial velocity, t = time and a = acceleration.
We have to find the displacement (s) of the body.
Using the Third Equation of Motion,
s = ut + 1/2 at²
Substitute the known values
→ s = 0(4) + 1/2 × 2 × (4)²
→ s = 0 + 1/2 × 2 × 16
→ s = 0 + 1 × 16
→ s = 16
Therefore,
Displacement of the boy is 16 m.
Answer:
Explanation:
STARTING FROM REST IMPLIES;
INITIAL VELOCITY,U = 0 M/S
TIME TAKEN,T = 4 SEC
ACCELERATION,A = 2 M/S²
ACCORDING TO NEWTON'S LAWS OF MOTION,
GIVEN DISPLACEMENT ;
S= UT +0.5AT² [ S = DISPLACEMENT]
S = 0*4+0.5 *2*4*4
S = 0+16
S = 16 M.
DISPLACEMENT OF THE BODY = 16 M.
HOPE THIS HELPS.