Mastering Physics - CH 02 HW 2

When striking, the pike, a predatory fish, can accelerate from rest to a speed of 4.1 ms in 0.15 s. How far does the pike move during this strike?

0.31 m

Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. In a typical strike, the chameleon's tongue accelerates at a remarkable 290 m/s^2 for 20 ms, then travels at constant speed for another 30 ms.

23 cm

Light-rail passenger trains that provide transportation within and between cities speed up and slow down with a nearly constant (and quite modest) acceleration. A train travels through a congested part of town at 5.0 m/s. Once free of this area, it speeds up to 11 m/s in 8.0 s. At the edge of town, the driver again accelerates, with the same acceleration, for another 16 s to reach a higher cruising speed.

23 m/s

When striking, the pike, a predatory fish, can accelerate from rest to a speed of 4.1 ms in 0.15 s. What is the acceleration of the pike during this strike?

27 m/s^2

Formula One racers speed up much more quickly than normal passenger vehicles, and they also can stop in a much shorter distance. A Formula One racer travelling at 90 m/s can stop in a distance of 110 mm.

37 m/s^2

Jenny and Alyssa are members of the cross-country team. On a training run, Jenny starts off and runs at a constant 3.8 m/s. Alyssa starts 19 s later and runs at a constant 4.0 m/s.

380 s

(Figure 1) shows the velocity graph of a bicycle. Choose the correct bicycle's acceleration graph for the interval 0s ≤ t ≤ 4s.

https://session.masteringphysics.com/problemAsset/1819582/4/jfk3.ch2.p19a.jpg