Question

can someome answer these please?

A runner jogs one lap around the track that encircles a football field (and, if it were me, would immediately collapse). If she ends where she began, and the distance is one-quarter mile, what is the displacement of the jogger?

A rocket is fired from the launch pad, obtaining a speed of 650 m/s in 7.0 seconds. What is the average acceleration of the rocket? Round to the nearest integer.

A coyote, closely related to Wiley, wants to attach a JATO rocket to a car. The JATO rocket can achieve a maximum speed of 350 miles per hour. If it can do so in a time of 15 seconds when starting from rest, distance does the rocket cover in that time?

If a NERF dart is fired from a NERF gun vertically with an initial speed of 10.0 m/s and the only acceleration that acts is gravity, what is the maximum height it achieves? Round to one decimal place.

Answer 1

1.As she reach at the point where she stat . So initial and final position is same .

Displacement = 0

2. Average acceleration = change in velocity /time .

= 650 ÷ 7 = 92.85 = 93 m/s2

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