Question

A 160g hockey puck initially moving with a speed of 5.00 m/s slides for 25.0 m...

A 160g hockey puck initially moving with a speed of 5.00 m/s slides for 25.0 m across the ice sheet of a hockey rink before coming to rest.
What is the acceleration of the puck as it moves?

What is the net force on the puck as it moves?

Draw a free body diagram. label each force.

What law of physcis can you use to relate the normal force on the puck to its weight? Derive the relation and evalutate the normal force.

Determine the coefficient of friction from its defining relation and what you determined above.

Homework Answers

Answer #1

a)
Using the relation, v2 - u2 = 2as,
Where v is the final velocity, v = 0, u is the initial velocity, u = 5 m/s, a is the acceleration and s is the distance travelled.
a = (v2 - u2) / 2s
= (0 - 25) / (2 x 25)
= - 0.50 m/s2

b)
Net force, F = ma
= 0.160 x 0.5
= 0.08 N

c)

d)
For every action, there is equal and opposite reaction.
Weight = Normal force
mg = N
N = 0.16 x 9.81
= 1.57 N

e)
Frictional force = N,
Where is the coefficient of friction.
This is the same force that stops the puck
F = N
= F/N
= 0.08 / 1.57
= 0.051

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A hockey puck (mass = 1 kg) leaves the players stick with a speed of 30...
A hockey puck (mass = 1 kg) leaves the players stick with a speed of 30 m/s and slides on the ice for 30 meters before coming to rest. What is the magnitude of the acceleration on the puck? m/s2 Tries 0/2 What is the magnitude of the friction force exerted on the puck due to the ice? N Tries 0/2 What is the normal force on the puck? N Tries 0/2 What is the friction coefficient between the puck...
A hockey puck (mass = 3.5 kg) leaves the players stick (moving to the left) with...
A hockey puck (mass = 3.5 kg) leaves the players stick (moving to the left) with a speed of 28 m/s and slides on the ice before coming to rest. The coefficient of friction between the puck and the ice is 0.9. What is the normal force on the puck? N Tries 0/2 What is the friction force exerted on the puck due to the ice? N Tries 0/2 What is the magnitude of the acceleration of the puck due...
An 160.0 g hockey puck slides along an essentially frictionless ice rink with speed 4.70 m/s....
An 160.0 g hockey puck slides along an essentially frictionless ice rink with speed 4.70 m/s. A hockey player uses her stick to do –1.20 J of work on the puck. What is the puck's speed after she has done this work? A. 0 m/s B. 2.66 m/s C. 3.50 m/s D. 4.53 m/s
A 100-gram hockey puck is initially moving horizontally to the left at a speed of 10...
A 100-gram hockey puck is initially moving horizontally to the left at a speed of 10 m/s, but is then slapped with a hockey stick to the right and moves off with a speed of 20 m/s. If the collision time between the hockey stick and the puck is ∆t = 0.030 s, what is the average force of the hockey stick on the puck, in Newtons?
During practice, a hockey player passes the puck to his coach who is 6.5 m away...
During practice, a hockey player passes the puck to his coach who is 6.5 m away as shown in the figure below. The puck, which has a mass of 0.198 kg, was initially at rest. The hockey player exerts a constant 46.9-N force as his stick pushes the puck 0.17 m. Include only the puck in the system and assume the friction between the ice and the puck is negligible. (a) Draw a free-body diagram for the puck while it...
65A. A hockey puck is given an initial speed of 4.1 m/s. If the coefficient of...
65A. A hockey puck is given an initial speed of 4.1 m/s. If the coefficient of kinetic friction between the puck and the ice is 0.05, how far does the puck slide before coming to rest? Solve this problem using conservation of energy. Express your answer with the appropriate units. 65B. Consider a particle of mass mm = 18.0 kg revolving around an axis with angular speed ω r = 0.500 m . Assume ω = 29.0 rad/s-What is the...
A hockey puck on a frozen pond with an initial speed of 16.3 m/s stops after...
A hockey puck on a frozen pond with an initial speed of 16.3 m/s stops after sliding a distance of 231.3 m. Calculate the average value of the coefficient of kinetic friction between the puck and the ice.
A hockey puck of mass m slides over a frozen lake surface. It is thrown with...
A hockey puck of mass m slides over a frozen lake surface. It is thrown with the initial velocity v and slows down to zero velocity due to ice friction. A coyote from Arizona is sitting on the ice. From his point of view the initial kinetic energy is mv^2/2 and the final kinetic energy is 0. Thus the coyote concludes that the amount of energy dissipated through the ice friction is mv^2/2. At the same time a penguin flies...
1`A puck of mass 0.110 kg slides across ice in the positive x-direction with a kinetic...
1`A puck of mass 0.110 kg slides across ice in the positive x-direction with a kinetic friction coefficient between the ice and puck of 0.167. If the puck is moving at an initial speed of 15.0 m/s, find the following. (a) What is the force of kinetic friction? (Indicate the direction with the sign of your answer.) N (b) What is the acceleration of the puck? (Indicate the direction with the sign of your answer.) m/s2 (c) How long does...
A 0.495-kg hockey puck, moving east with a speed of 4.20 m/s , has a head-on...
A 0.495-kg hockey puck, moving east with a speed of 4.20 m/s , has a head-on collision with a 0.850-kg puck initially at rest. a) Assuming a perfectly elastic collision, what will be the speed (magnitude of the velocity) of each object after the collision?