Question

A train traveling at 20m/s -¹ accelerates at 0.5m/s-² for 30 seconds . How far will it travel in this time

Answer 1

$\huge\red{\underline{{\boxed{\textbf{QUESTION}}}}}$

A train traveling at 20m/s -¹ accelerates at 0.5m/s-² for 30 seconds . How far will it travel in this time

$\huge\red{\underline{{\boxed{\textbf{ANSWER}}}}}$

velocity v=20m/s

acceleration a =0.5m/s²

time t=30s

let distance travel =S

using Newton law of motion,

S=ut+1/2at²

S=20x30+0.5x(30)²/2

S=600+0.5x900/2

S=600+0.5x450

S=600+225

S=825m

Hence, distance travelled is 825 metres .

__________________

HARSH PRATAP SINGH

Answer 2

Answer:

u = 20 m/s

a = 0.5 m/s2

t = 30 sec

Using second equation of motion

$s = ut + \frac{1}{2} a {t}^{2}$

$s = 20 \times 30 + \frac{1}{2} (0.5) ({30})^{2}$

$s = 600 + 225$

s=825m

Hence ,The distance travelled is 825 m

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