Can you guys confirm that the ones that i did are correct and how do you do D.?

Question

Can you guys confirm that the ones that i did are correct and how do you do D.? Thanks!

5. A 350 g block sits on a horizontal frictionless table Eg ma a. What is the gravitational force on the block? 3.43 N 1,9 m/s 3 sog /looo b. What is the normal force ofthe table on the block? Fn 13, 13 N c. If the initially stationary block is pushed horizontally with a force of 0.500 N for one second, what is the acceleration of the block during that one second? 0.7 m/s Soon d. What is the velocity of the block after the push is completed?

Explanation / Answer

Solution:

Gravitational force = mg = (0.350 )(9.8) = 3.43 N = Magnitude

direction is downwards

b) Since it rests on the horizontal table, normal force = gravitational force = Fn= mg = 3.43 N and is upwards vertically

c) Fnet = ma

=> a = Fnet / m = 0.50 / 0.35 = 1.43 m/s^2 .

d) vf=? vi =0 t = 1 s; a = 1.43 m/s^2

vf = vi +at

=> vf = 0+(1.43)(1) = 1.43 m/s

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