what is the net force experienced by a 20 N book sitting on a desk with a 30 N object on top of it

Q: 8. (a) A car with a mass of 850 kg is moving to the right with a constant speed of 1.44 m/s. What is…

A: (a)Newton's second law states that acceleration of an object is directly proportional  to the net…

Q: A man pushes two boxes with the same amount of force (because they look identical and he can’t see…

A:

Q: A person traveling in a 2,000 kg car at a constant speed of 40.0 m/s applies the brakes, causing a…

A: Given:Mass of the car = 2,000 kgInitial speed of the car = 40 m/sFinal speed of the car = 0Force…

Q: A cart with an unknown mass is at rest on one side of a track. A student must find the mass of the…

A: Since the calculated mass is less than that of the measured mass. This suggests that the…

Q: On her way to visit Grandmother, Red Riding Hood sat down to rest and placed her 1.20-kg basket of…

A: Mass of basket: m = 1.20 kg Force applied by wolf: FW = 6.40 N Angle between wolf force and…

Q: A net force of 46 N acts on a shopping cart full of groceries producing an acceleration of 4.0 m/s2.…

A:

Q: A 32.3-kg crate rests on a horizontal floor, and a 68.8-kg person is standing on the crate.…

A: Given that a 32.3kg crate rests on a horizontal floor and 68.8kg person is standing on the crate…

Q: A 64 kg baseball player jumps into the air throws a 151 g baseball directly eastward with a force of…

A: Given; Mass of the player = 64 kg Mass of the ball = 151 g =0.151 kg Force = 8.4 N            To…

Q: • • At the local grocery store, you push a 14.5-kg shopping cart. You stop for a moment to add a bag…

A:

Q: Two bodies P and Q on a smooth horizontal surface are connected by a light cord. The mass of P is…

A: Consider the acceleration of the system to be a.

Q: Mary applies a force of 71 N to push a box with an acceleration of 0.45 m/s2. When she increases the…

A:

Q: Imagine you are at Disneyland on a big roller coaster, sitting with a friend in the front seat of…

A: The roller coaster is the example for the Newton's law of motion. As it is having loops, twist and…

Q: A 44.1-kg crate rests on a horizontal floor, and a 66.9-kg person is standing on the crate.…

A: (a)Normal force exerted by the floor on the crate is,

Q: A 1,000 kg car traveling along the highway at 30 m/s slows to 10 m/s in 5.0 s. The magnitude of the…

A: Given, Mass of the car, M=1000 kg Initial velocity, u=30 m/s Final velocity, v=10 m/s Time taken,…

Q: Two objects are placed a distance of 50 cm apart. The force that each one exerts on the other is 1.4…

A: distance between two objects = 50 cm = 0.50 m Force between two masses = 1.4×10-9 N Let the first…

Q: Two blocks are positioned on surfaces, each inclined at the same angle of 49.2 degrees with respect…

A:

Q: A 5 kg block is contacting a 3 kg block on a frictionless surface. IF a horizontal force of  8 N is…

A: Given, two masses kept on the horizontal frictionless surface. M1=5kg  M2=3kg Horizontal force…

Q: A 90 kg woman on roller skates pushes a 35 kg girl, also on roller skates, with a force of 50 N. The…

A: By Newton's third law "For every action in nature is an equal and opposite reaction"

Q: Your friend's 11.1 g tassel hangs on a string from his rear-view mirror. When he accelerates from a…

A: When the he accelerates from the stoplight, the tassel deflects backward. When it is at some angle…

Q: A 32.7-kg crate rests on a horizontal floor, and a 62.0-kg person is standing on the crate.…

A: (a) Newtons second law says that accelaration of an objetc is directly propotional to the net force.…

Q: Two people, one of mass 100 kg and the other of mass 50 kg, stand facing each other on an…

A:

Q: n. The child then pulls horizontally on the wagon with a force of 65 N. If the box does not move…

A: Given A 32 kg child puts a 15 kg box into a 12 kg wagon Force applied by child horizontally on…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!