Question

a motorcycle starting from rest accelerates at 10 metre per second square for 10 seconds and travels at a uniform velocity for the next 20 seconds what is the total distance travelled this in this interval of 30 seconds​

Answer 1

Hello Dear,

◆ Answer -

Distance = 2.5 km

◆ Explanation -

Distance travelled in first 10 s -

s1 = u.t1 + 1/2 a.t1^2

s1 = 0 × 10 + 1/2 × 10 × 10^2

s1 = 500 m

Velocity at the end of 10 s is -

v = u + a.t1

v = 0 + 10 × 10

v = 100 m/s

Distance traveled in next 20 s -

s2 = v.t2

s2 = 100 × 20

s2 = 2000 m

Total distance traveled in 30 s is -

s = s1 + s2

s = 500 + 2000

s = 2500 m

s = 2.5 km

Therefore, total distance travelled by motorcycle in 30 s is 2.5 km.

Thanks dear...