The kinetic friction coefficient between a hockey puck and ice is 0.113. The puck slides a distance of 57.4m before coming to a stop. The initial speed of the puck was m Hint: The mass of the puck should cancel out of your equations.

A physics student hits a hockey puck, giving it an initial velocity of 6.0 m/s. If the coefficient of kinetic friction between ice and puck is 0.20, how far will the puck slide before stopping?

A physics student, in a stationary elevator, places a 240.0 g mass on an electronic balance. The student hits the elevator button and it begins to move upwards. While the elevator is moving, the student records this information Time = 0 to 3.0 sec the balance reads 278 grams Time = 3.0 - 12 sec the balance reads 240. grams Time = 12.0 to 15.0 sec the balance reads 192 gram How far up (in meters) did the elevator travel? Consider: UP to be (+), DOWN to be (-) and g =9.8 m/s2 .  ROUND YOUR ANSWER TO A WHOLE NUMBER of meters (no decimal places) HINT: This problem requires finding THREE different displacements and adding them up! 2nd HINT:  You will need to (A) use your equations of motion or (B) make a v-t graph to find those displacements!

Please answer

We often think of friction and air resistance as forces that we want to minimize because they can hinder the motion of an object.  But they are not always undesirable, and in fact, can be an essential element in a machine or process. Identify one or two applications that depend on friction and air resistance.  Explain how friction or air resistance works in those situations and what would happen if there were no friction or air resistance.  Your initial post should be 75-150 words in length and is due on Sunday.

A water slide is connected so that a swimmer, starting from rest at the top of the slide, leaves the end of the slide travelling horizontally. one person hits the water 6m from the end of the slide in a time 0.4 seconds after leaving the slide. ignoring friction and air resistance, find the height H. b) how does the answer change if the swimmer leves the end at an angle of 10 degrees above the horizontal?

A commercial airplane is coming in for a landing. Just before it hits the runway it is moving at 76 m/s. The plane has a mass of 20,000 kg. The runway is 1.6km long and, obviously, the airplane needs to be stopped before it reaches the end of the runway. How large is the braking force the airplane needs to stop safely before the end of the runway?

What is the mass of the box?

In an experiment conducted at Carleton university, following experimental setup has been prepared. In this experiment, block A is released from rest and strikes cart B. Neglecting the effect of friction, find the maximum displacement s that cart B travels beyond point C. The coefficient of restitution for the collision is e = 0.7. 0.6 m 30 Impact Test 3 kg 60° 1.8 m B 1 kg This region is the arc of a circle

You are in charge of a cannon that exerts a force 17100 N on a cannon ball while the ball is in the barrel of the cannon. The length of the cannon barrel is 2.37 m and the cannon is aimed at a 36.7 ◦ angle from the ground. The acceleration of gravity is 9.8 m/s 2 . If you want the ball to leave the cannon with speed v0 = 89 m/s, what mass cannon ball must you use? Answer in units of kg. Answer in units of kg.