A car weighing 3300lb is moving at a speed of 38mi / h at a certain moment the driver pressed the brakes hard, so the car slid until it was completely quiet and while sliding the car tires were subjected to a friction force of about 0.70 times as much as the weight of the car is what distance the car travels before it stops completely I consider that the movement is in the direction of the axle x

2. A person of mass 60 kg is able to exert a constant 1200 N of force downward when executing a jump by pressing against the ground for t = 0.5 s. (a) Draw freebody diagrams for the person during the moments before the jump, executing the jump, and right after taking off. (b) How long would they be airborne on the moon, which has gravita- tional acceleration of moon 1.62 m/s²? =

The 0.16 kg particle has a speed v = 11.9m / s as it passes the position shown. The coefficient of kinetic friction between the particle and the vertical plane track is mu*k = 0.24 Determine the magnitude of the total force exerted by the track on the particle What is the change in speed v (positive if speeds up, negative is slows down) of the particle?

The net force on a mass is zero. Which ONE of the following must be TRUE? The mass must be at rest. The speed of the mass is constant but the direction of motion may be changing. Both the speed and the direction of motion of the mass may be changing. The direction of motion of the mass is constant but the speed may be changing. O The velocity of the mass is constant.

A bowling ball of mass m=2.6 kg drops from a height h = 12 m. A semi-circular tube of radius r = 5.4 m rest centered on a scale. A) Write an expression for the reading of the scale when the bowling ball is at its lowest point, in terms of the variable in the problem statement B) What does the scale read in newtons.

25) In a movie stunt, a car leaves an inclined ramp with a speed of 32.0 m/s. The car's mass is 1050 kg and its velocity is 29.0 m/s at the peak of its flight. How high in the air (relative to the location where it left the ramp) is the car at the peak of its flight? Assume that there is no air problem can be done using Kinematics too. g although the v = 32 m/s h = ? m = 1050 kg 0.01 lo ribar a and boa pugi oq anoiudover '01

السؤال 34 One of the following could be a kinetic friction coefficient Hk: 0.15 N O 0.15J O 0.15 O 0.15 N/m Up O

An Atwood’s machine is set up by suspending two blocks connected by a string of negligible mass over a pulley, as shown above. The blocks are initially held at rest and then released at time t0=0 s. The speed of the 3 kg block at time t1=2.0 s is most nearly: A) 2.0  m/s   B) 4.0 m/s   C) 7.0 m/s   D) 10.0 m/s

A driver in a 1000.0kg car traveling at 28 m/s slams on the brakes and skids to a stop. If the coefficient of friction between the tires and the road is 0.80, how long will the skid marks be? O 50 m 63 m 40 m O 47 m

1 object with a mass of 1500 g (grams) accelerates 10.0 m/s> when an unknown force is applied to it. What is the amount of the force?