Question

Ch-motion

A biker starts a race and crosses the half line in 3 second with speed 54 km/h and after that he increases his speed uniformally at a rate $\sf{7.5 m/s^2}$ and completed the
race in 5 second.

(A) Acceleration in the first half of the race is$\sf{ 5 m/s^2.}$

(B) He finished the race with speed 108 km/h.

(C) Acceleration in the second half of the race is $\sf{12.5 m/s^2}$

Choose the correct option.​

Answer 1

Answer:

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Answer 2

Answer:

Ch-motion

A biker starts a race and crosses the half line in 3 second with speed 54 km/h and after that he increases his speed uniformally at a rate \sf{7.5 m/s^2}7.5m/s

2

and completed the

race in 5 second.

(A) Acceleration in the first half of the race is\sf{ 5 m/s^2.}5m/s

2

.

(B) He finished the race with speed 108 km/h.

(C) Acceleration in the second half of the race is \sf{12.5 m/s^2}12.5m/s

2

Choose the correct option.

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