Question

A cheetah is at rest. It accelerates at 4 m s−2 for 20 seconds. Calculate distance travelled after 20 second.

Answer 1

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Answer 2

GIVEN

A cheetah is at rest. It accelerates at 4 m s−2 for 20 seconds.

TO FIND

Calculate distance travelled after 20 second.

SOLUTION

• Initial velocity (u) = 0
• Acceleration (a) = 4m/s²
• Time (t) = 20 s
• Distance (s) = ?

According to second equation of motion

→ s = ut + ½ at²

→ s = 0*20 + ½ × 4 × (20)²

→ s = 0 + 2 × 400

→ s = 800 m

Hence, distance travelled after 20s is. 800m