Question

A jogger starts from rest and accelerates for 4 s with an acceleration of 1.1 m/s² . What is the jogger's speed after 4 s?

Answer 1

To find the jogger's speed after 4 seconds, we can use the equation v = u + at, where v is the final velocity, u is the initial velocity (0 m/s), a is the acceleration (1.1 m/s²), and t is time 4 seconds. Plugging in the values, the jogger's speed after 4 seconds is 4.4 m/s.

Step-by-step explanation:

To find the jogger's speed after 4 seconds, we can use the equation:

v = u + at

where:

• v is the final velocity
• u is the initial velocity (in this case, 0 m/s since the jogger starts from rest)
• a is the acceleration (1.1 m/s²)
• t is the time (4 s)

Plugging in the values, we get:

v = 0 + 1.1(4) = 4.4 m/s

Therefore, the jogger's speed after 4 seconds is 4.4 m/s.