Tommy is working on a physics problem and asks his friend Sarah to check his work. He is to draw a free body diagram for a man walking to the left and comes up with the following: He reasons, “The man is walking to the left, so the force of friction is acting in the opposite direction. The normal force should be opposite and equal to that of the gravitational force.” Is Tommy correct with his diagram and reasoning? If so, explain. If not, what mistake did he make?

Q: 1. a) A catcher stops a 0.15-kg ball traveling at 40 m/s in a distance of 20 cm. What is the…

A: Given:- The mass of the ball is m = 0.15 kg. The speed of the ball is v = 40 m/s  The distance the…

Q: Two crates connected by a rope lie on a horizontal surface (Figure 1). Crate A has mass mA and crate…

A: A has mass mA and crate B has mass mBThe crates are pulled to the right at a constant velocity by a…

Q: A brick of mass m = 78 kg slides along a horizontal surface. The coefficient of friction between the…

A: Since the brick has an initial speed in the positive x – direction, Therefore, the frictional force…

Q: Derive the formulae for the range and height of a body launched with velocity v at an angle 0 to the…

A: This is a normal projectile motion where the particle is projected in a uniform force field along…

Q: Three blocks, light connecting ropes, and a light frictionless pulley comprise a system, as shown in…

A: Given,Tension in the rope connected block B and block C is, TC = 60 Nblock A is accelerated downward…

Q: A rocket takes off from Earth's surface, accelerating straight up at 73.2 m/s2. Calculate the normal…

A: Acceleration, a = 73.2 m/s²Mass, m = 83.4 kgNormal force, F = ?

Q: 5.0 kg) on a tilted wooden board with an angle of 0 = 30° There is a metal block (m from the…

A: Given: The mass of the metal box is m = 5 kg The wooden board makes an angle with respect to the…

Q: Draw two force diagrams. One for the cart and one for the hanger. You can treat the track as…

A:

Q: Tommy is working on a physics problem and asks his friend Sarah to check his work. He is to draw a…

A: frictional force always act opposite to direction of motion that is if  man is walking to the left…

Q: Two snowcats tow a housing unit to a new location at McMurdo Base, Antarctica, as shown in the…

A:

Q: A 800 kg vehicle is traveling at a constant speed of 1.48 m/s due north. What is the total force (in…

A: The objective of the question is to find the total force on the vehicle when it is moving due north…

Q: Calculate the magnitude of the normal force on a 20.2 kg block in the following circumstances.…

A: given: mass of block m =20.2 kg

Q: In the figure below, the net external force on the 28 kg mower is given as 52 N. If the force of…

A: Mass of mower (m) = 28 kg Net external force on the mover (Fnet) = 52 N Force of friction (f) = 10 N…

Q: The 80 kg man pushes on the 120 kg crate with a horizontal force F. The coefficients of static and…

A:

Q: An another object is in the outer space. Only three forces are acting on it. One has the magnitude…

A: F1 = 9 N F2 = 12 N Angle between F1 and F2 = 90°F3 = ?

Q: Figure Q1 shows two carts of different masses connected by three springs. ki, k2 and kz are the…

A: The instantaneous state of the system is specified by the displacement of both masses, x1 and x2.…

Q: A bowl of apples is resting on a table. The bowl is not moving (it is not accelerating) even though…

A: Solution: Newton's Third law states "that every action has an equal and opposite reaction of the…

Q: A rocket takes off from Earth's surface, accelerating straight up at 45.2m/s2. Calculate the normal…

A:

Q: A 10.0 kg mass is acted on by the two forces:   and  F1=(3.0N)i+(2.0N)j and F2=(10.0N)i+(7N.0)7 a)…

A: Given  F1= (3 i+ 2 j) N,   F2= (10 i+7 j) N Summation of these two forces would be Fresultant=…

Q: Problem 5: An object of mass m has these three forces acting on it (there is no normal force, "no…

A: a) F = F1(-j) + F2 i + F3 (-i)     F = -3j + 10i - 5i = 5i -3j  b) magnitude of net force =…

Q: A block with a mass of m = 16 kg rests on a frictionless surface and is subject to two forces acting…

A: (a)From the figure the net force acting in the x direction is given by,

Q: A dancer is standing on one leg on a drawbridge that is about to open. The coefficients of static…

A: When the bridge is completely horizontal fbd of the man can be drawn as followsSince there is no…

Q: A rocket takes off from Earth's surface, accelerating straight up at 75.2 m/s?. Calculate the normal…

A: The forces acting on the astronaut are the weight force acting downwards , which is , W=mg and the…

Q: o Blocks having mass m=11.0 kg are connected by a light string passing through two pulleys as shown.…

A: Visualize the Problem:

Q: An aircraft carrier uses a device called a catapult to help accelerate jets to the speed needed for…

A: The formula of force from newton's 2nd law is, F=m(vf-vi)t=mawhere,m= mass of an objectvf=final…

Q: of the following statements is true about the forces acting on the block? Explain answer.

A:

Q: A cardboard box rests on the floor of an elevator. The box has a mass m = 2.75 kg and the elevator…

A:

Q: A 15.0 kg load of bricks hangs from one end of a rope that passes over a small, frictionless pulley.…

A:

Q: Superman must stop a 105-km/h train in 100 m to keep it from hitting a stalled car on the tracks.…

A: GIVEN Speed of train = 105 km/hr Distance traveled = 100 m Mass of the train = 3.6 x 105 kg To find…

Q: Newton's first law states that: Group of answer choices Ia. n the absence of any net force acting on…

A: Newton's first law states that a body continues in its states of rest or of uniform motion until and…

Q: In the figure below, the net external force on the 28 kg mower is given as 59 N. Fnet If the force…

A: Mass of mower (m) = 28 kg Net force = 59 N Frictional force = 26 N

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”