A 17.4 kg box is initially at rest and is being pushed sideways by a force = 165e-t N over a flat surface with a coefficient of friction of 0.1, where t is how long the force has been applied. How far does the box go in 4.9 seconds?

The distance between two telephone poles is d = 54.0 m. When a 1.20 kg bird lands on the telephone wire midway between the poles, the wire sags h = 0.206 m. (a) Draw a free-body diagram of the midpoint of the wire (where the bird is perched). mg O X* (b) How much tension (in N) does the bird produce in the wire? Ignore the weight of the wire. 3.15 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. N Need Help? Read It

A mass is on a slope with a coefficient of friction = 0.79. Slowly the angle of the slope is increased. What is the angle in degrees when the mass just starts to slide down the slope?

The coefficient of kinetic friction between a box and the floor is μk = 0.14 and the coefficient of static friction is μs = 2.0μk. Calculate the ratio of static to kinetic friction force if m = 8 kg.

You are playing stuffleboard and you must slide your weighted disk 8m across the floor where it will come to rest on the target. You give it an initial push of 4 m/s but then it slides on its own to a stop. The disk is 0.8 kg. What is the coefficient of friction if your shot is perfect a bull's eye?

A 1.57 kg mass is sliding across a horizontal surface an initial velocity of 12.9 m/s i.  If the object then comes to a stop over a time of 4.23 seconds, what must the coefficient of kinetic be? Assume that only friction, the normal force, and the force due to gravity are acting on the mass. Enter a number rounded to 3 decimal places.

*** A car accelerates uniformly from rest to a speed of 60.0 mni/h in 10.0 s. a) Find the distance the car travels during this time. (b) Find the constant acceleration of the car. m/s²

of air Question 10. A 16.2-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 65.1 N and is directed at an angle of 30° above the horizontal. Determine the coefficient of kinetic friction. Ans: 0.446 Question 11. A person in tui

e weight of the block in the drawing is 97.0 N. The coefficient of static friction between the block and the vertical wall is 0.430. (a) What minimum magnitude of the force is required to prevent the block from sliding down the wall? (Hint: The static frictional force erted by the block is directed upward, paraliel to the wall.) (b) What minimum force is required to start the block moving up the wall? (Hint: The static frictional force is now directed down the wall.) Block wall ) Number Units p) Number Units

Due to a jaw injury, a patient must wear a strap that produces a net upward force of 5.00 N on his chin. The tension is the same throughout the strap. To what tension must the strap be adjusted to provide the necessary upward force?