The international space station orbits the Earth at an altitude of about 250 km.What is the...

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The international space station orbits the Earth at an altitude of about 250 km.
What is the acceleration due to gravity at that height above the ground?
The mass of the Earth is 5.98 x 1024 kg and the radius of the Earth is 6371 km.
A) c XXXXXXXXXXm/s²
B) b. 0 m/s²
C) a. 9.8 m/s²
D) d. 9.10 m/s²
2.
A 7.93 kg box is pulled along a horizontal surface by a force F_P of 84.0 N applied
at a 47.0º angle. If the coefficient of kinetic friction is 0.35, what is the
acceleration of the box?

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3.
A car uniformly decelerates at a rate of -5.00 m/s². How far does the car
travel after 1.50 seconds if it initially was moving at a speed of 25.0 m/s?
A) b. 37.5 m
B) c. 31.9 m
C) a. 25.0 m
D) d. 28.1 m
4.
A ball is at the top of a ramp that is 4.5 m above a table. If the balls
rolls without friction, how fast is it going at the bottom of the ramp?
A) a. 9.4 m/s
B) d. 3.6 m/s
C) b. 4.5 m/s
D) c. 0.0 m/s
5.
Three forces, each having a magnitude of 30 N, pull on an object in
directions that are 120 degrees apart from each other. Make a statement
concerning the resultant force.
A) The resultant force is zero.
B) None of the above
C) The resultant force is less than 30 N.
D) The resultant force is greater than 30 N
E) The resultant force is equal to 30 N.
6.
A subatomic particle with mass m initially are rest suddenly decays. If one of the
resultant particles with mass 0.40 m of mass leaves with a velocity of 5.5 x 10⁵ m/s,
what is the velocity of the other particle created?
A) d. 2.5 x 10⁵ m/s
B) c. 6.0 x 10⁵ m/s
C) a. 3.3 x 10⁵ m/s
D) b. 3.7 x 10⁵ m/s
7.
A 25 kg is acted on by a 45 N horizontal force. If the box accelerates at a
rate of .75 m/s², what is the coefficient of kinetic friction between the box and the table?
A) d. 1.05
B) b. 0.11
C) c. 0.55
D) a. 0.25
8.
A cannonball is fired horizontally with an initial velocity of 655 m/s from the end of a
cliff 725 m high. How far in the x direction does the cannonball in the air before it
hits the ground?
A) a. 8070 m
B) b. 4030 m
C) c. 5670 m
D) d. 9540 m

David · Accepted Answer

1. 
The international space station orbits the Earth at an altitude of about 250 km.  
What is the acceleration due to gravity at that height above the ground?  
The mass of the Earth is 5.98 x 1024 kg and the radius of the Earth is 6371 km. 
A) c. 9098710 m/s2 
B) b. 0 m/s2 
C) a. 9.8 m/s2 
D) d. 9.10 m/s2 
 
Answer: D 9.10 m/s2 
 
 
2. 
A 7.93 kg box is pulled along a horizontal surface by a force FP of 84.0 N applied  
at a 47.0º angle. If the coefficient of kinetic friction is 0.35, what is the  
acceleration of the box?
Answer : Acceleration of the box will be 6.85 ms-2 
 
 
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3. 
A car uniformly decelerates at a rate of -5.00 m/s2. How far does the car  
travel after 1.

The international space station orbits the Earth at an altitude of about 250 km. What is the acceleration due to gravity at that height above the ground? The mass of the Earth is 5.98 x 1024 kg and...

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