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Question: i need assistance with theseandnbsp5andnbspandnbspandnbspandnbspandnbspandnbspa 10 kg block on a...

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I need assistance with these

 

5.      A 10 kg block on a smooth frictionless surface is being pushed with two forces of 25 N and 10 N as show on diagram. What is the acceleration of the block ? 

 

 

 

(a) 3.0 m/s2

(b) 3.5 m/s2 Answer

(c) 2.5 m/s2

(d) 1.0 m/s2

(e) 1.5 m/s2

(f)  5.0 m/s2

6.      An astronaut has a weight of 500 N on the Earth. What is his/her weight on the planet with g = 0.65 m/s2.  (assume: g = 9.81 m/s2 for the acceleration due to gravity on the Earth).

 

(a) 20 N 

(b) 33 N Answer

(c) 24 N 

(d) 12 N 

(e) 35 N 

(f)  29 N 

 

 

4.      A ball is thrown straight up with an initial speed of 50 m/s. What is the maximum height the ball will reach ?. (assume: g = 9.81 m/s2).

 

 

(a) 115 m 

(b) 121 m 

(c) 132 m 

(d) 127 m 

(e) 123 m Answer

(f)  135 m 

 

 

 

 

 

5.      Determine the magnitude of the x-component of the force due to gravity on the 75kg-block if the following incline is frictionless (see picture below).  (assume: g = 9.81 m/s2).

 

 

 

 

(g) 550 N 

(h) 600 N 

(i)   605 N 

(j)   625 N 

(k) 603 N 

(l)   584 N 

 

 

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