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Answer:
F = ma The force of friction for a 7.5-kg object being pushed horizontally at a constant A 30-kg wooden box is resting on a carpeted surface. If the ... An applied force of 21 N accelerates a 9.0-kg wagon at 2.0 m/s² along the sidewalk. (u=0,034. 5. A sled of mass of 50.0 kg is pulled along a flat, snow-covered ground.
Explanation:
Answer:
Explanation:
Given the mass of the crate = 10kg
initial speed of the crate = 1.50m/s
pulling force F = 100N
angle of inclination = 20°
Coefficient of kinetic friction = 0.400
Distance traveled by the crate d = 5.00m
Application of newton's second law perpendicular to the inclined plane is used and the detailed calculation is as shown in the attached file.
Complete Question
The complete question is shown on the first uploaded image
Answer:
a
b
c
Explanation:
From the question we are told that
The mass of the coal car is
The velocity is
The load of coal dropped is
Generally the momentum of the system before the coal is added is mathematically represented as
=>
=>
Generally from the law of momentum conservation is mathematically represented as
Here is the velocity of the load before it is dropped and the value is 0 m/s
So
=>
=>
When v = 1m/s and remain the same
Then
=>
=>
=>