Mechanics | Relativity Answers

Try making all three graphs for the following scenario:
1. John starts out north of home. At time zero he’s driving a cement
mixer south very fast at a constant speed.
2. He accidentally runs over an innocent cat crossing the road, so he slows to a stop to check on the poor cat.
3. He pauses for a while until he determines the cat is squashed flat and deader than a doornail.
4. Fleeing the scene of the crime, John takes off again in the same direction, speeding up quickly.
5. When his conscience gets the better of him, he slows, turns around, and returns to the crash site.

what is a necessary condition for the total momentum of a system to be conserved?

Solve the following ordinary differential equations

(a) dy/dx+ycotx=power of e is cosx
For x=π/2 y=-2

(b) d square y/dx square + dy/dx + y =0

An experiment involves gradually lifting of one end of air track so the height increases with time according to the h(t)=At where A=0.10m/s. The length of incline is 2 m.the glider is initially at rest at one end of air track. how much time It will take to reach the other end of the air track

you throw a ball straight up with an initial velocity of 15.0m/s letting it go at 1.5m above the ground it passes a tree branch on the way up at a height of 7.00m how much additional time will pass before the ball passes the tree branch on the way back down?

what kinematics equations do you plan to use to solve this problem?
at what times does it pass the branch the first time on the way up ?
at what time does it pass the branch the second time on the way down?
what is the answer to the question asked on the problem?

Amanpushingacrateofmassm592.0kgataspeedof v 5 0.850 m/s encounters a rough horizontal surface of length , 5 0.65 m as in Figure P5.18. If the coefficient of kinetic fric- tion between the crate and rough surface is 0.358 and he exerts a constant horizontal force of 275 N on the crate, find (a) the magnitude and direction of the net force on the crate while it is on the rough surface, (b) the net work done on the crate while it is on the rough surface, and (c) the speed of the crate when it reaches the end of the rough surface.

A block of mass m 5
2.50 kg is pushed a distance
d 5 2.20 m along a frictionless
horizontal table by a constant
applied force of magnitude
F 5 16.0 N directed at an angle
u 5 25.0° below the horizon-
tal as shown in Figure P5.8.
Determine the work done by (a) the applied force, (b) the normal force exerted by the table, (c) the force of gravity, and (d) the net force on the block

The coefficient of static friction between the 3.00-kg crate and the 35.0° incline of Figure P4.31 is 0.300. What minimum force SF must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline?

A ball has a momentum of 35 kg·m/s. If the mass of the ball is 5.0 kg, what is the speed of the ball?

in a safety test in car of mass 1000 kg is driver into a brick wall its bumper behaves like a spring k is equal to 5 into 10 ki power 6 Newton per metre and is compressed by a distance of 3 cm as the car comes to rest in the initial speed of the car