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Mechanics

Mechanics is the branch of physics that deals with the interactions of objects and forces in the observable world. Questions asking about projectile motion, conservation of energy, and calculus based mechanics are perfect for this topic, but questions about repairs that a mechanic would do belong in our vehicles categories.

2,416 Questions

Does speed increase when the net force is opposite to the direction of motion?

When the net force on a body is in the opposite direction to the motion of the body the speed of the body will never increase rather retardation will take place and the body will lose its speed.

Which does a ball roll farther in grass or dirt?

Neither. The ball rolls faster on cement, not grass, or dirt.

What is the speed of an object in a certain direction?

Speed is distance/time or distance per unit of time. It is velocity that is distance/time in a given direction. Velocity can be said to be speed in a certain direction.

When a force on an object increases how does the object acceleration change?

Changing the magnitude or direction of forces exerted on an object changes the net force (sum of all forces) exerted on the object. The net force exerted on an object is defined as mass times acceleration (F = ma), where mass, m, is constant. This means that when the net force exerted on the object changes in magnitude (or direction), its acceleration will also change in magnitude (or direction). In addition, acceleration is defined as the change in velocity, so when the magnitude (or direction) of acceleration changes, the magnitude (or direction) of velocity will also change.

How do you find the magnitude of a free falling object?

force= mass (kg) x acceration(m/s2) meters per second sq.

What is the friction drag?

Friction drag is the drag acting on the surface of an object from a fluid flowing over it. When a fluid flows over an object it exerts a shear force on the object because of the fluid's viscosity which pulls the object in the direction of the flow.

What does PRND321 stand for?

It stands for:

Park=P

Reverse=R

Neutral=N

Drive=D

1=1st gear

2=2nd gear

3=3rd gear

How does lateral displacement change with the width of a glass slab?

, this is ojashwin mishra----

lateral displacement increases with the increase in thickness of the medium.

it doesnt have any relation with the width of the glass slab

What is the effect of gravity - on the motion of falling objects - that are not inhibited by air resistance?

All objects, under these conditions, will accelerate at the same rate as they fall.

(Note: Just the fact that you can call it a "falling" object is one of the effects of gravity.)

Why does air escaping from the open end of small pipe make a lot more noise than air escaping at the same volume rate from a large piece?

Sound waves are produced from disturbances in the pressure of an environment ( which is why in space, no one can hear you scream...theres nothing to be disturbed by your scream). So, if the same volume, and therefore the same mass, of air is escaping from a smaller opening, the pressure disturbance is magnified since the pressure the air exerts on the atmosphere around it is greater.

If you run a 40 in a 4.24 how is that in mph?

40 meters in 4.24 seconds equates to a speed of 21.1 miles per hour.

What is torque socket?

Answer A torque wrench has a gage which indicates the amount of twisting pressure (torque) applied as the fastener is tightened. This ensures the proper amount of torque and consistency and is meant to prevent over- or under-tightening of the fastener

great answer! often used on car tires

IS Earthquake is force or motion?

An earthquake is a force craking in the air.

What is the formula for torque?

t = r X F, where t is torque, r is displacement, and F is force; all quantities are vectors. Because the formula contains a cross product, the magnitude of the torque is given by the expression rFsin(θ), where θ is the angle between the position vector and the force vector.

What is definition of mass of a star?

Same as any other mass. The mass is sometimes (informally) described as the "amount of substance" something has.

Same as any other mass. The mass is sometimes (informally) described as the "amount of substance" something has.

Same as any other mass. The mass is sometimes (informally) described as the "amount of substance" something has.

Same as any other mass. The mass is sometimes (informally) described as the "amount of substance" something has.

Definition of degree of freedom in vibrating system?

It refers to different ways in which the system can vibrate.