The magnitude of deceleration required for a body, moving at a speed of 10 m/s to come to a complete halt at a distance of 100 m is

Question

The magnitude of deceleration required for a body, moving at a speed of 10 m/s to come to a complete halt at a distance of 100 m is (A) 20 m/s2 (B) 10 m/s2 (C) 2 m/s2 (D) 0.5 m/s2

Tardigrade Admin · Accepted Answer

Given speed of body (u)=10 m / s and distance travelled (s)=+100 m From the equation of motion v2-u2 =2 a s Given, v=0, a =? -(10)2 =2 a(100 m ) ⇒ a =-(100/2 × 100) =-0.5 m / s 2 So acceleration is negative with magnitude of 0.5 m / s 2

Q. The magnitude of deceleration required for a body, moving at a speed of $10 m / s$ to come to a complete halt at a distance of $100 m$ is

20 $m / s^{2}$

10 $m / s^{2}$

2 $m / s^{2}$

0.5 $m / s^{2}$

1 $m / s^{2}$

Q. The magnitude of deceleration required for a body, moving at a speed of 10m/s to come to a complete halt at a distance of 100m is

20 m/s2

10 m/s2

2 m/s2

0.5 m/s2

1 m/s2