Question

2. Verification of Newtons Second Law After we did Newton second law experiment the data is shown in Figure below. Mag Slope 0.120 (kgm/s) Use the graph to find Me when Ma -30 g. General Questions 1. A football, a cricket ball, and a tennis ball all fall down in the absence of air resistance. Which of the following is true about their acceleration? The acceleration of the football is greater than the other two b. The acceleration of the cricket ball is greater than the other two c. The acceleration of the tennis ball is greater than the other two d. They all fall down with the same constant acceleration 2. You're standing at the edge of a cliff and drop a ball. It takes 10 sec to hit the ground. How high up are you? a. 490 m b. 560 m c. 49 m d. 56 m

Answer 1

Mag 1 (kg. m/s2) Slope= 0.120 a A Constant force Mag is applied on the mass mi. By above graph we can see that, the graph is plotted between total force and Acceleration and slope of this graph is the mass of the system on which the force is Applied So, By the Graph, Me=0.120kg M. = 120gm Ans General Questione they all fall down with some Constant Acceleration because the gravitational Acceleration (g) is constant value (9.8 m/82 for all the objects. ③. Let the right of cliff is h. time taken = Lopec. initial velocity (4) = omgee A g = 9.0 m/82 By Newton's law: = ut & Z gt² h = 0 + 449.8X197? 9.0x100 [h= 490 m Ans