Calculate the force a 70.0-kg high jumper must exert onthe ground to produce an upward acceleration 4.00 times theacceleration due to gravity. Explicitly show how you follow thesteps in the Problem-Solving Strategy for Newton’s laws ofmotion.

Q: An object moves in a straight line at a constant speed. Is it truethat there must be no forces of…

A: Moving at a constant speed does not mean that there are no forces acting on the object. It might be…

Q: A box of mass M is dragged across a rough horizontal surface using force F. Label all forces acting…

A: N is normal force f is frictional force m is mass, g is acceleration due to gravity mg is weight of…

Q: You’ve just kicked a rock, and it is now sliding across the ground about 2 meters in front of you.…

A: Given: You’ve just kicked a rock, and it is now sliding across the ground about 2 meters in front of…

Q: What is the weight in Newtons, of a (a) 123 lbs person? (b) 186 lbs person?

A:

Q: 10 kg box sits motionless on a ramp that forms a 20° angle with the groun a) What is the magnitude…

A: We know that the let the mass of the box is m = 10 kg and it sits on the ramp that forms a θ= 20°…

Q: the magnitude of the force F for e er in terms of the weight of the suit pur answers in terms of the…

A:

Q: If the rocket sled  starts with onlyone rocket burning, what is the magnitude of its…

A: (a) Apply Newton’s second law

Q: A 403.280 kg car is traveling down a 25- degree slope. At the instant that the speed s 13 m/s, the…

A: Write the given values of this problem. m=403.280 kgvo=13 m/sθ=25°d=68.310 m

Q: A cleaner pushes a 4.50-kg laundry cart in such a way that the net external force on it is 60.0 N.…

A: The expression for the required acceleration is,

Q: While skydiving, Dee Seperate opens her parachute and her 53.4-kg body immediately accelerates…

A:

Q: An acorn falls from a tree. Ignoring air resistance, what forces are on the acorn while it's…

A: Acorn is small nut of the oak tree, that grows in a base shaped like a cup when acorn falls from…

Q: When landing after a spectacular somersault, a 55.0 kg gymnast decelerates by pushing straight down…

A: Given  Mass m=55kg Deacceleration a=8×9.8=78.4 m/s2

Q: A 1500 kg car moving at 20 km/h is accelerated ata constant rate of 4 m/s2up to a speed of 75…

A:

Q: A body of mass 2 slugs is acted on by the downward force of gravity and a horizontal force of 130…

A: Let the body’s mass is denoted by m and the horizontal force is denoted by F. Evaluate the…

Q: Superman throws a 2400 N boulder at an adversary. What horizontal force must Superman apply to the…

A: Given data W=2400 Na=12 m/s2

Q: A 403.280 kg car is traveling down a 25-degree slope. At the instant that the speed is 13 m/s, the…

A:

Q: (True or False) Net force and acceleration are always in the same direction.

A:

Q: The wheels of a midsize car exert a force of 2100 Nbackward on the road to accelerate the car in the…

A:

Q: The fire alarm goes off, and a 97-kg fireman slides 3.0 m down a poleto the ground floor. Suppose…

A: From kinematics equation, the expression for the displacement is: y=v0yt+12ayt23.0m = (0 m/s)(1.2 s)…

Q: What net external force is needed to impart an acceleration of 2.00 m/s2 on an object of mass 10.0…

A:

Q: A clarinetist, setting out for a performance, grabs his 3.070 kg clarinet case (including the…

A: The free-body diagram can be drawn as

Q: A bag of sugar weighs 5.00 lb on Earth. What would it weigh innewtons on the Moon, where the…

A:

Q: 4o0ky is gove ve eEE An object of mase acceleration exerted Of 20M5 Find the force the objeck.

A:

Q: How much net force is required to accelerate a 1000 kg car at 4.00 m/s²?

A:

Q: A clarinetist, setting out for a performance, grabs his 3.210 kg clarinet case (including the…

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: Data Given ,  Mass of the object ( m ) = 2 kg  Acceleration ( a ) = 2 m/s2 We have to find out the…

Q: What net force is needed to accelerate a 10-kg mass at the rate of 40 m/s2 (neglect all friction):…

A: Given data: The mass of the object is m=10 kg. The acceleration of the mass is a=40 m/s2.

Q: Determine the net force and acceleration.

A: Mass of the box = M = 100 kg Angle of the inclination = Coefficient of friction = The free body…

Q: During a hard stop, a car and its passengers slows from 46 m/s to zero in 0.5- s. What magnitude…

A:

Q: The rotors of a 15,200-kg heavy-lift helicopter exert a downward force of 322,000 N in order to…

A: Let the mass of the cargo be 'm' The acceleration(a) given = 0.5 m/s2 let acceleration due to…

Q: A 100-g box slides across a frictionless horizontal plane. If it is accelerating at 15 m/s2, find…

A:

Q: our shopping cart has a art down an aisle at 0.34 m/s2, what force (in newtons, N) would you need to…

A:

Q: A 450 kg rocket sled can be accelerated at a constant rate from rest to 1800 km/h in 2.3 s. What is…

A:

Q: A shopper pushes a 8 kg shopping cart up a 300 incline.  If the applied force is parallel to the…

A: According to the Newton’s second law of motion, the equation can be written as ∑Fnet=ma…

Q: Suppose a body of 20Kg having an acceleration of 7m/s2. What is net force experienced by it?

A:

Q: As part of an attempt to combine physics and biology in the sameclass, an instructor asks students…

A: Given:- mass (m)=5.2 kg Find:-the apparent weight of the salmon. a)  If the elevator is rest  b) if…

Q: A 4.80 Kg bucket of water is accelerated upward by a cord of negligible mass whose breaking strenght…

A: Given, a cord of negligible mass having Tension in cord, T= 75 N Bucket of water has Mass, m= 4.80…

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.