Question

The velocity of a body as a function of time is V= t3 - 6t2 + 10t + 4. Set the accelerations of a body in increasing order at given times
a) t= 0 sec b) t= 1 sec c) t= 5 sec
1) b, a, c
2) a, b, c
3) c, b, a
4) c, a ,b​

Answer 1

Answer:

1

Explanation:

a=

dt

dV

=

dt

d

(t

3

−6t

2

+10t+4)=3t

2

−12t+10

a) a

(att=0)

=3(0)

2

−12(0)+10=10m/s

2

b) a

(att=1)

=3(1)

2

−12(1)+10=1m/s

2

c) a

(att=5)

=3(5)

2

−12(5)+10=25m/s

2

Therefore, the correct sequence is b < a < c.

How satisfied are you with the answer?