Mechanics

A horizontal line parallel to speed axis indicates that the body is moving at a constant speed i.e. it's speed doesn't change with passage of time. The body may have zero or non zero acceleration, but it will always have non zero velocity.

But, that doesn't mean that body's velocity is constant and it is not accelerated. For example in uniform circular motion the speed of body remains constant but velocity changes due to change in the direction of motion. Also there is acceleration towards center of circle called centripetal acceleration which changes the direction of velocity.

For this acceleration a force should act towards the center called centripetal force.

If speed is constant then the force, if present, must act in direction perpendicular to the immediate direction of motion i.e. perpendicular to the tangent drawn at any point on the path of motion.

If the speed is constant the frictional force must be equal to the propelling force (which is gravity in this case) as any imbalance of forces creates an acceleration.

If the 60N is in the same direction as the movement, then the frictional force is also 60N. If 60N is the gravitational force, you'll have to use the angle to calculate the propelling force that acts in the direction of movement. Again, the frictional force will be exactly the same as the propelling force in the direction of movement (only in magnitude, though - the direction of the frictional force (the vector) will be in the opposite direction).

If the same force is constantly applied to two movable objects, the more massive one will accelerate. Also, the more massive one will accelerate more slowly than the less massive one.

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.

density

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

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.

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.

compression stress

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

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.

i think the output......................

A wave can only pass through a medium

They get distant and more quieter

It stands for:

Park=P

Reverse=R

Neutral=N

Drive=D

1=1st gear

2=2nd gear

3=3rd gear

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.)

, 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

Presence of friction, incline and so on.

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.

E-BAY!!!

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

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

The ball's speed is 9.4 meters per second.

An earthquake is a force craking in the air.

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.