The distance d of a particle moving in a straight line is given by d (t) = 2t^3 + 5t - 2, where t is given in seconds and d is measured in meters. Find the velocity of the particle for t = 7 seconds.

152 m/s

47 m/s

733 m/s

299 m/s

Question

Mathematics

Tripod

18 March, 13:36

The distance d of a particle moving in a straight line is given by d (t) = 2t^3 + 5t - 2, where t is given in seconds and d is measured in meters. Find the velocity of the particle for t = 7 seconds.

152 m/s

47 m/s

733 m/s

299 m/s

+4

Answers (1)

Know the Answer?

Eduardo Bauer · Answer 1

Answer: 299 m/s

Step-by-step explanation:

The first step is to take the first derivative of the equation given. This will give us the equation for velocity which we will then substitute the 7 in for t.

To derive the equation you multiply the coefficient by the power of the variable, then subtract one from the variable.

v (t) = 6t^2 + 5

Now input 7 in for t to find the velocity.

v (7) = 6 (7) ^2 + 5

v (7) = 299 m/s

The distance d of a particle moving in a straight line is given by d (t) = 2t^3 + 5t - 2, where t is given in seconds and d is measured in meters. Find the velocity of the particle for t = 7 seconds.152 m/s47 m/s733 m/s299 m/s

The distance d of a particle moving in a straight line is given by d (t) = 2t^3 + 5t - 2, where t is given in seconds and d is measured in meters. Find the velocity of the particle for t = 7 seconds.

152 m/s

47 m/s

733 m/s

299 m/s