Question

D Question 2 14.3 pts A book slides off a table horizontally with a velocity of 2 m/s and hits the floor in 046 seconds. How high is the table top from the floor? 1.0 m 1.6 m 0.5 m 1.9 m 2.1 m 4 Previous Next No new data to save. Last checked at 1:16pm Submit Quiz

Answer 1

The correct option is (i) because :-

Here the acceleration along X-axis a_x = 0 But the acceleration along Y-axis a_y = + 9.8 m/sec^2 and intial velocity along Y-axis u_y = v_y_0 = 0 m/s then by using the equation (along Y-axis) y = u_y t + 1/2 gt^2 implies h = 0.t + 1/2 (+ 9.8).(0.46)^2 implies h = 9.8 times 0.2116/2 implies h = 1.03684m option (i) is correct.

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