In the winter sport of curling, players give a 20 kg stone a push across a sheet of ice. The stone moves approximately 40 m before coming to rest. The final position of the stone, in principle, only depends on the initial speed at which it is launched and the force of friction between the ice and the stone, but team members can use brooms to sweep the ice in front of the stone to adjust its speed and trajectory a bit; they must do this without touching the stone. Judicious sweeping can lengthen the travel of the stone by 3 m. The sweepers in a curling competition adjust the trajectory of the stone byA. Decreasing the coefficient of friction between the stone and the ice.B. Increasing the coefficient of friction between the stone and the ice.C. Changing friction from kinetic to static.D. Changing friction from static to kinetic.

Q: A flea jumps by exerting a force of 1.32 x 10 N straight down on the ground. A breeze blowing on the…

A: force exerted by flea = 1.32 x 10-5 N  down wardbut according Newtons third lawforce acting on flea…

Q: Student A and Student B are both wearing inline skates. Student B pushes Student A abruptly. This…

A: Initially both the students are at rest, so the initial momentum of the both the students A and B is…

Q: The figure below shows two boxes connected to each other by a light rope that passes over a pulley…

A: The masses of the boxes are,  m1=10.0 kgm2=4.70 kg The angle of inclination, θ=35.0°

Q: A 0.5126-kg hammer is moving horizontally at 6.802 m/s when it strikes a nail and comes to rest…

A: The given values are,

Q: A heavy block of mass 625 kg is suspended by a cable is moving downwards with an initial velocity of…

A: Net force is,

Q: A toad with mass of 280 g leaps into the air to catch a fly. If the toad's jump was at an angle of…

A: When the toad with a mass of 280 g leaps into the air to catch a fly and the toad's jump was at an…

Q: When installing a Red Carpet for the Oscars, workers found that if they push the carpet roll (image…

A:

Q: In the winter sport of curling, players give a 20 kg stone a push across a sheet of ice. The stone…

A: Given: Speed of the stone = 3 m/s Time taken = 2 seconds Mass of the rock = 20 Kg

Q: One end of a rope is tied to a 11 kg hanging weight. The rope goes over a pulley and the other end…

A:

Q: A hockey puck struck by a hockey stick is given an initial speed v0 in the positive x -direction.…

A: Given:  initial velocity = vo coefficient of friction = μk final velocity = 0

Q: A 15 kg monkey climbs up a massless rope that runs over a frictionless tree limb and back down to a…

A:

Q: A block of mass 3.4 kg and another block of mass 6.1 kg are attached with a massless cord. The cord…

A:

Q: You're driving along at 25m/s with your aunt's valuable antiques in the back of your pickup truck…

A:

Q: A 18 kg monkey climbs up a massless rope that runs over a frictionless tree limb and back down to a…

A: Given : mass of monkey, m = 18 kg mass of package, M = 25 kg acceleration due to gravity, a = 9.8…

Q: A plane is initially at rest on the ground.  The minimum speed for the plane to take off is 50…

A: Given data:  Initial velocity (u) = 0 m/s Final velocity (v) = 50 m/s Distance (d) = 2 km = 2000 m…

Q: A stacked pair of books with masses m1= 1.5 kg (bottom book) and m2 = 1.0 kg (top book) are tossed…

A:

Q: Under what circumstances is the effect of air resistance negligible on a falling object? i.e. When…

A: Usually the force due to air resistance on a falling object is given by   F = 12ρACv2   ρ = density…

Q: Two horizontal forces,  P and Q, are acting on a block that is placed on a table. We know that  P…

A:

Q: A mass of 1.1 kg lies on a frictionless table, pulled by another mass of 3.8 kg under the influence…

A:

Q: What is the speed and direction of the child? How long does it take the child to make it to the edge…

A: Given mass of the child (m1) = 25kg mass of the dog (m2)= 11kg radius of the pond (r)= 15m velocity…

Q: Alex is asked to move two boxes of books in contact with each other and resting on a rough floor. He…

A:

Q: In deep space, an astronaut is whipping a heavy tool around in a circle by a taut cable. The cable…

A:

Q: A slanted roof rises at 35° above the horizontal, and the straight-line distance from the top of the…

A:

Q: Mary applies a force of 78 N to push a box with an acceleration of 0.49 m/s2. When she increases the…

A: Draw the free-body diagram of the system.

Q: Three blocks with masses 6 kg, 9 kg, and 10 kg are connected as shown below. The coefficient of…

A:

Q: identified a type of fundamental particle called a muon, which effectively behaves like a very heavy…

A: Given:- The mass of the muon m = 1.88 × 10-28 kg The initial speed of the muon is v0 = 3.50 × 105…

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: