Question

0 out of 10 points on 1 What is the speed ot the boat? A person is standing at rest on a brdge that is 50 metres above the water. They drop their celiphone. Remember that drop means the initial velocity -0 s. t falrs directy onto a boat that was moving with a constant horizontal velocity that was 12 metres from the point of impact (where the cell phone hits the boat) when the cellphone was dropped Ignore the height of the boat Assume where the cellphone lands it is just at the height of the water. What is the speed of the boat in meters per second? In class and on the test you must always Just give me the magnitude of the speed here as this sily program cannot handle units 1 already gave you the unts, mclude the unts in the nal anwer meters per second dnesday, Jaruary 9,2019 1.59 11 PM PST OK

Answer 1

Height of bridge from the surface of water h 50 m Here, negative for downward displacement Initial velocity 0 Acceleration due to gravity g -9.8 Now, by equation of kinematics, -50 m = (0) t + (-9.8-2):2 10 n = 3.2 sec. x 3.2 9.8で Since, boat was at the distance of d-12 m from the hitting point of the cellphone and it is moving with constant speed Consider speed of boat is v. d 12m Thus, speed of the boat :176 m/s Ans. t 3.2s This is the speed of the boat.