Physics Force & Laws Of Motion Level: Misc Level
An older car, without ABS, is moving down the road at a speed, v, Ahead is an accident, The driver has two choices to stop:either locks the brakes or skids to a stop, the brakes, keep the wheels rolling
until coming to a stop. Which will get the car to stop more quickly?Why? identify any assumptions you make in answering this question.
Physics Force & Laws Of Motion Level: Misc Level
1-A block of mass m is at rest lying on the face of an incline plane. The plane makes an angle with the horizontal.
A- Draw the free body diagram showing all the forces acting on the block.
B- Write the equations for the net forces acting on the block. Be sure to specify your choice and coordinate system.
Physics Force & Laws Of Motion Level: Misc Level
Three boxes slide on a frictionless horizontal surface when pulled by a force of magnitude F. When we compare the tensions T1 and T 2 with the force F, we find that" Justify answer"
a) T1 =T 2=F b) T 1=F>T2 c) F> T1 =T2. d) F> T1>T2. e) F-T1 <T1-T2.
Physics Force & Laws Of Motion Level: Misc Level
a box is droped onto a conveyor belt moving at 2 m/sec. If the coefficient of friction between the box and the belt is 0.3, how long before the box moves without slipping?
Physics Force & Laws Of Motion Level: Misc Level
a 2000 kg sailboat experiences an eastward force of 3000 N by the ocean tide and a wind force against its sals of magnitude 6000 N directed toward the northwest( 45 degree north of west).What is the magnitude and direction of the resultant acceleration ? include a free body diagram in your solution.
Physics Force & Laws Of Motion Level: Misc Level
A 45 N lithograph is supported by two wires. One wires makes a 25 degress angle with the vertical and the other makes a 15 degrees anglewith the vertical. Fid the Tension in each wire?
Physics Force & Laws Of Motion Level: Misc Level
Bullets are fired from and airplane in the forward direction of motion. The momentum of the airplane will be.
Physics Force & Laws Of Motion Level: Misc Level
A mack truck and a Volkswagen traveling at the same speed collide head on. The impact force is?
Physics Force & Laws Of Motion Level: Misc Level
In order to catch a ball, a baseball player extends the hand forward before the impact with the ball and then lets it ride backwards in the direction of the balls motion upon impact. Doing this reduces the force of impact on the player s hand principally because the.
Physics Force & Laws Of Motion Level: Misc Level
If the speed of a car is doubled, the impulse required to stop the car changes by a factor of
Physics Force & Laws Of Motion Level: Misc Level
A car traveling at 100 km/hr strikes an unfortunate bug and splatters it. The force of impact is
Physics Force & Laws Of Motion Level: Misc Level
A heavy truck and asmall truck, (lighter) roll down a hill. Neglecting friction, at the bottom of the hill, the heavy truck will have greater.
Physics Force & Laws Of Motion Level: Misc Level
A baseball player bats a ball with a force 1000 N. The bat has a mass of. 5 kg. The ball exerts a reaction force against the bat of.
Physics Force & Laws Of Motion Level: Misc Level
Starting from rest, a 10 kg block slides 3 m down a frictionless ramp ( inclined at 30 % from the floor) to the bottom. The block then slides an additional 5 m along the floor before coming to a stop. Determine (a) the speed of the block at the bottom of the ramp, (b) the coefficient of kinetic friction between block and floor, and (c) the mechanical energy lost due to friction.
Physics Force & Laws Of Motion Level: Misc Level
A 2.00 kg block of wood moves up an inclined plane at a constant velocity. If the angle is 30 degrees and the coefficicient of kinetic friction between the block and the plane is 0.435. what is the magnitude of the frictional what is the value of the force (F) going upward to move the block at a constant velocity? If the block has moved 1. 50 m up the incline, what is the amount of work done in the process? what is the change in potential energy in the process?
