Question

4. The displacement is given by x=2t^2+t+5 , the acceleration at t=2s is (a) a m18 (c) 10 m/s (d) 15 ml​

Answer 1

Answer:

4m/s

2

a=

dt

2

d

2

x

=

dt

2

d

2

(2t

2

+t+5)=

dt

d

(4t+1)=4 m/s

2