A sound-producing object is moving away from an observer. The sound the observer hears will have a frequency that actually being
2 answers:
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The acceleration will be constantly equal to 1 m/s².Option c is correct.
<h3>What is force?</h3>Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body.
Force is defined as the product of mass and acceleration. Its unit is Newton.
Given data;
Force,F = 350 N
Friction force,f=350 N
F=f
Because the frictional and applied forces on the two boxes are of equal strength, both move at the same pace. As a result, the acceleration will be constantly equal to 1 m/s².
Hence option c is correct.
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Answer:
86.53 m/s
Explanation:
Given:
Mass of clay (m) = 14.0 g = 0.014 kg
Mass of block (M) = 110 g = 0.110 kg
Initial speed of block (U) = 0 m/s
Sliding distance (d) = 7.50 m
Coefficient of friction between block and surface (μ) = 0.650
Let the initial speed of clay be 'u' and speed of clay and block just after collision be 'v'.
Now, momentum is conserved just before and just after collision.
Momentum just before collision =
Momentum just after collision =
Therefore, --------- (1)
Now, using newton's second law and we find the acceleration of the system.
The frictional force is given as:
Now, using equation of motion, we can find the velocity just after collision.
Plug in the given values and find 'v'. This gives,
Now, using equation (1) and substituting the given values, we get:
Therefore, the speed of the clay immediately before impact is 86.53 m/s.