Physics, asked by pranav004, 1 year ago

pls solve question below with explaination also pls

Attachments:

Answers

Answered by HimanshuR

a= -4m/sec^2
u=????(To be calculated)
v=0m/s(he applied brakes)
t=3 seconds
$i) \: v = u + at \\ 0 = u + ( - 4) \times 3 \\ u = 12$
therefore initial velocity is 12m/s.
$ii) \: if \: speed \: is \: 12 \: metre \: per \: seconds \\ then \: distance \: travelled \\ in \: 3 \: seconds = 12 \times 3 \\ = 36m$
So, The accident may occur in 3 seconds with the speed of 12m/s.
$iii) \: the \: driver \: shows \: the \: kindness \: to \: the \: innocent \: man.$

pranav004: i think ii) part will yes as accident will happen bcoz distance travelled in 3s is 36m but in ques its wriiten that he applied brakes 20 m away

HimanshuR: the question is asked that when the driven is at 20m away from the old man

pranav004: but distance covered is 36m

HimanshuR: So accident may occur

Previous Question

Next Question