A soccer player starts from rest and accelerates forward, reaching a velocity of 8.00 m/s in 2.50 s. (a) What was his average acceleration? (b) What average force did he exert backward on the ground to achieve this acceleration? The player’s mass is 70.0 kg, and air resistance is negligible.

Q: A freight train has a mass of 1.0 ✕ 107 kg. If the locomotive can exert a constant pull of 7.3 ✕ 105…

A: Given,

Q: A freight train has a mass of 1.4 ✕ 107 kg. If the locomotive can exert a constant pull of 7.7 ✕ 105…

A: To find the acceleration: Let's use Newton's force formula in terms of mass and acceleration…

Q: A 2000 kg car increases its speed from 2 m/s to 8 m/s in 3s on a rough road, while the engine…

A: Given,  m = 2000 kg  u = 2 m/s  v = 8 m/s  Forward Force F = 6940 N  Now the free body diagram of…

Q: law x (1) q = 4 ms- A body of mass 2 kg travels according to the = pt + gi + rt where p = 3 ms- and…

A:

Q: Neglecting friction and air resistance, what force is required to accelerate an automobile weighing…

A: Given Dara : The weight of the automobile is given as W=2.5×104 N The initial speed of the…

Q: A block weighing 200 N is pushed along a surface. If it takes 80 N to get the block moving and 40 N…

A:

Q: What is the magnitude of the net force needed to bring a 2085 kg car to rest from 25.6 m/s in 9.3…

A: Solution: Given that mass m= 2085 kg vinitial = 25.6 m/s time t = 9.3 s to find the force required

Q: A 9000-N automobile is pushed along a level road by four students who apply a total forward force of…

A: Given data: Weight of the automobile (W) = 9000 N Force applied (F) = 500 N Friction force is…

Q: An object of mass m is initially at rest. After a force of magnitude F acts on it for a time T, the…

A:

Q: The net external force on the 24-kg mower is stated to be 51 N. If the force of friction opposing…

A:

Q: What net force is required to accelerate an 85 kg sprinter from rest to a speed of 12m/s in 3.0…

A: As per Newton’s 2nd law, the net force can be represented as, Here, m and a represent the…

Q: If it actually hits the ground with a speed of 9.00 m/s, what is the magnitude of the average force…

A:

Q: An object with a mass of 2.0 kg accelerates 2.0 m/s? when an unknown force is applied to it. What is…

A: According to Newton's 2nd Law:   F = ma                                 ...... (1)               (…

Q: A freight train has a mass of 1.2 ✕ 107 kg. If the locomotive can exert a constant pull of 7.9 ✕ 105…

A: The expression for acceleration of the train will be, a=Fma=7.9×105N1.2×107kga=6.6×10-2m/s

Q: A constant force of 200N is required to accelerate a 1600-kg trailer from rest to a speed of 25 m/s.…

A: Write the given values with the suitable variables. F=200 Nm=1600 kgu=0 m/sv=25 m/s Here, F is the…

Q: A skydiver weighing mg=192lb (with equipment) jumps from a plane. The coefficient of air resistance…

A:

Q: What constant force is required to accelerate a 1000 kg car from rest to 40 m/s over a distance of…

A:

Q: When a 2 lb force acts on a 500 qram object that is able to move freely, the object will have: O a…

A: force = 2 lb mass = 500 g

Q: A freight train has a mass of 1.1 ✕ 107 kg. If the locomotive can exert a constant pull of 7.6 ✕ 105…

A: From Newton’s second law of motion.

Q: A boat with mass of 6.7 * 10 kg is traveling at 1.2 * 10' m/s. What is the magnitude of the force…

A:

Q: A late traveler rushes to catch a plane, pulling a suitcase with a force directed 30° above the…

A:

Q: When a bug hits the windshield of a moving car, why does the bug get "squished" while the car…

A: This can be taken as the case of inelastic collision. The car is moving at a very high speed and the…

Q: A 100 kg stunt woman falls from a three-story building that is 10 m high. If she falls into a net,…

A:

Q: A 10 kg box of parcel is pulled across a level floor, where the coefficient of kinetic friction is…

A:

Q: A pebble of mass 0.05 kg is thrown vertically upwards. Give the direction and magnitude of the net…

A: Acceleration due to gravity, irrespective of the direction of motion of an object, always acts…

Q: Three forces acting on an object are given by F, = (-1.9î + 7.45j) N, F, = (4.70î - 1.5j) N, and F,…

A: F1→ = -1.9i^ + 7.45j^ F2→ = 4.70i^ - 1.5j^ F3→ = 42i^  acceleration a = 4.00 m /s2  To find =…

Q: Three forces act on a 5-kg object: F1 = -2.0i + 3.0j N, F2 = 5.0i + 3.5j N, and F3 = 0.5i- 1.0j N.…

A:

Q: An object with a mass 50kg is acted upon by a force of 200N. The object's acceleration is? a) 0.2…

A:

Q: The velocity of a body of mass 20 kg increases from 5 m/s to 20 m/s in a distance of 100 m. The…

A:

Q: A 2 kg otter starts from rest at the top of a muddy incline to 85 cm long and slides down to the…

A:

Q: A freight train has a mass of 1.4x10^7 kg. if the locomotive can exert a constant pull of 8.3x10^5…

A: According to the Newton’s second law, the acceleration of the freight train,Substitute the values,

Q: A freight train has a mass of 1.4 x 10' kg. If the locomotive can exert a constant pull of 6.8 x 105…

A:

Q: A freight train has a mass of 1.1 ✕ 107 kg. If the locomotive can exert a constant pull of 7.4 ✕ 105…

A: Given information:Mass of the train (m) = 1.1 × 107 KgForce the locomotive can exert (F) = 7.4 × 105…

Q: A person pushes a 0.20 kg lunch tray across a table, and it slows down as it slides because of…

A: Given data: Mass of lunch tray is, m=0.20 kg. Coefficient of static friction is, μs=0.15.…

Q: A locomotive is pulling 12 freight cars, each of which is loaded with the same amount of weight. The…

A: The net force on the third car is, T23-T34=ma=37000 kg0.78 m/s2=28860 N Now, rearrange the above…

Q: In a grocery store, you push a 15.4 kg shopping cart horizontally with a force of 13.4 N. If the…

A: Given Mass of cart m = 15.4 kg Force F = 13.4 N We have to find out how far this cart move in 2.50…

Q: What is the friction force of an object moving with constant velocity if the mass of the vehicle is…

A: We have to find the normal force          N=mg........ (1) m= mass of the object  g= acceleration…

Q: A high diver of mass 63.0 kg Jumps off a board 10.0 m above the water. If her downward motion is…

A: Given, Mass of diver =63 kg Height of board above water =10 m Time taken to stop the downward motion…

Q: A freight train has a mass of 1.0 ✕ 107 kg. If the locomotive can exert a constant pull of 8.2 ✕ 105…

A: Given data The mass is, m=1.0x107 kg The force is, F= 8.2x105 N The initial speed is u=0 km/h = 0…

Q: When a constant force is applied to an object, the acceleration of the object varies inversely with…

A:

Q: If you exert a horizontal force of 200 N to slide a crate across a factory floor at constant…

A: The crate is moving with a constant velocity. The acceleration of the crate is thus zero. The net…

Q: A 100 kg crate is being pushed on a horizontal floor at constant velocity. Given that the…

A: Mass of crate(m) = 100 kg Friction  coefficient (μκ) = 0.2 g= 9.8 m/s2

Q: Ahmed is pushing a box with a force 53 N, in the West direction. Salim is pushing the same box with…

A: Write the given values of this problem. F1=53 NwestF2=25 NEast

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: