1. A car starts from 0 x 10 m at 0t 0 s and moves with the velocity graph shown in the figure below.
(i) What is the car’s position at t = 2 s, 3 s, and 4 s?
(ii) Does this car ever change direction? If so, at what time?
2. Squid use jet propulsion for rapid escapes. A squid pulls the water into its body and then rapidly ejects the water backward to propel itself forward. By ejecting 0.15 kg of water, a 1.5 kg squid (not including water mass) can accelerate at 20 m/s2(i) What is the magnitude of the thrust force on the squid?
(ii) What is the magnitude of the thrust force on the ejected water?
(iii) What acceleration is experienced by the ejected water?