Question

A car increase its speed from 20 km/hr to 50 km/min 10 seconds. Find its
acceleration. (Hint: convert km/hr to m/s. v= u + at].​

Answer 1

Answer:

here is your answer, hope you like it

Answer 2

Answer:

0.833m/s

Explanation:

From the question,

u = 20km/hr = 20×5/18 = 100/18 = 5.55m/s

v = 50km/hr = 50×5/18 = 250/18 = 13.88m/s

t = 10 sec

a = ?

We know that v = u + at,

===>

$a = v - u \div t \\ a = 250 - 100 \div 18 \\ a = 150 \div 18 = 8.33m |s {}^{2}$

This answer should be divided by time, t = 10 sec, which gives us the answer, 0.833m/s.

------------------

Hope it helps......!

●●♡♡●●