Question

Q.17. An object moving with a velocity of 3m/s accelerates uniformly at
the rate of 2 m/s2
i) Calculate the velocity after 5 seconds.
ii) Calculate the distance travelled in 5 seconds​

Answer 1

Answer:

D =  7.1m  v = 1.4m/s

Explanation:

2m/s^2

= 1.4142135623731 per second

5 secs = 7.0710678118655 (by finding root 2)

(DISTANCE TRAVELLED)

VELOCITY = 1.4M/s

Answer 2

Answer:

${\huge{\bold{\blue{\underline{♡Answer-♡}}}}}$

Given, u = 3 m/s

a = 2 m/s^2

t = 5 second

(i) we know that ,

v= u + at

v= 3 + 2 ×5

v= 3 + 10

v= 13 m/s^2

(ii) we know that

s= ut + 1/2 at^2

= 3 × 5 + 1/2× 2 ×(5)^2

= 15 + 25

= 40 m