Question

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Answer 1

20m per second in 20 seconds means 20 *20 which is 400m per second

Answer 2

Answer:

a = 1 m/sec²

Explanation:

• starting from rest u = 0
• attains velocity v = 20 m/s
• time t = 20 sec

FORMULA

v = u + at

$20 = 0 + a \times 20 \\ 20 = 20 \times a \\ a = \frac{ \: 20 \: }{20} \\ a = 1 \:$