Question

A bus starting from rest masses with a uniform acceleration of 2 m/s for 4 minutes. a)find the speed acquired. b)find the distance travelled ​

Answer 1

Answer:

a) 480 m/s

b) 57600 m

Explanation:

use the equation of motion

v=u+at

s=it + 0.5at^2

Answer 2

GIVEN :

• Initial velocity, u = 0 m/s.
• Acceleration, a = 2 m/s².
• Time, t = 4 min.

TO FIND :

• Speed, v = ?
• Distance travelled, d = ?

CONCEPTS USED :

• Newton's first law of motion.
• Newton's third law of motion.

SOLUTION :

To find the speed, v = ?

Using the Newton's first equation of motion,

V = u + at.

Substitute the given values in the above equation.

$\implies$ V = 0 + 2 × 240

$\implies$ V = 0 + 480

$\large \fbox \red {\sf Speed \ = \ 480 \ m/s}$

•°• Therefore, the speed acquired is 480 m/s.

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Now,

To find the distance travelled = ?

Using the third equation of motion,

S = ut + 1/2 at²

Substitute the given values in the above equation.

$\implies$ S = 0 × 240 + 1/2 × 2 × 240 × 240.

$\implies$ S = 0 + 57600

$\large \fbox \red {\sf Distance \ = \ 57600 \ m}$

•°• Therefore, the distance travelled is 57600 meters.

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