If a hockey puck is made to slide along a straight line on a completely frictionless surface, which statement about the motion o
2 answers:
Answer:
The hockey puck will continue moving with constant velocity along a straight line.
Explanation:
As per Newton's first law we know that when there is no net force on an object then the velocity of object will always remains constant
Or we can say that the acceleration of an object will be zero when the force applied on the object is zero.
As per Newton's law we know
so we will have
a = 0
so object will continue in straight line with same uniform speed without any change in magnitude as well as any change in direction
so correct answer will be
The hockey puck will continue moving with constant velocity along a straight line.
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The force needed to keep the space shuttle moving at constant speed is 0.
The given parameters;
- <em>weight of the space shuttle, F = 750,000 N</em>
- <em>constant speed of the space shuttle, v = 28,000 km/h</em>
The mass of the space shuttle is calculated as follows;
The force needed to keep the space shuttle moving at constant speed is calculated as follows;
where;
a is the acceleration of the space shuttle
At a constant speed, acceleration is zero.
F = 76,530.61 x 0
F = 0
Thus, the force needed to keep the space shuttle moving at constant speed is 0.
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