Question

Given v = 3 +49 and a=i+j. Find rate of
change of speed.​

Answer 1

Use equation of kinematics: v = u + at

Initial Velocity, u = 3i + 4j

Acceleration, a = 0.4i + 0.3j

Time, t = 10s

v = (3i + 4j) + 10(0.4i + 0.3j)

v = (3i + 4j) + (4i + 3j)

v = 7i + 7j

|v| = √(49+49) = 7(√2)

Answer 2

SOLUTION

Refer to the attachment

hope it helps ☺️