I think it’s a because if u do the math that’s what it says
25mph I hope this helps and sorry it took so long
Answer:
a) 16m/s b) 192m
Explanation:
v1=32m/s a=-2m/s^2 t=8s v2=? d=??
a) I will use this equation v2= v1 + a*t
v2= 32m/s + -2m/s^2 * 8s
v2= 32m/s + -16m/s
v2= 16m/s
b) v2^2=v1^2 + 2ad
rearranging
v2^2-v1^2=2ad
v2^2-v1^2/2= a d
v2^2-v1^2/2a=d
16m/s^2 - 32m/s^2/ 2 x-2m/s^2 =d
d=192m
shm
displacement is A*sin 2pi f t
vel =( A*2*pi*f*)*cos 2 pi f t
accn =-( A*2*pi*f*)^2*sin 2 pi f t
accn = (0.01*2*3*5)
accn = (0.01x30)^2=9
