A woman was transporting an open box of cupcakes to a school party. The car in front of her stopped suddenly; she applied her brakes immediately. She was wearing her seat belt and suffered no physical harm (just a great deal of embarrassment), but the cupcakes flew into the dashboard and became "smushcakes." Explain what happened.

Q: If you hit somebody from behind, his head seems to snap backwards. Why?

A: Force brings about motion and changes in it.  This force produce acceleration and hence the changes…

Q: •P66 You stand on a spherical asteroid of uniform density whose mass is 2 × 1016 kg and whose radius…

A:

Q: 1. A hockey puck slides along the ice when it collides with a filled water bottle which was sitting…

A: Hockey puck (m)= 0.2kg  u1= 5i - 6j m/s  u2= -5cos36.87° i - 5 sin 36.87° j      = -4i -3j m/s  M=…

Q: wo automobiles, each of mass 500 kg, are moving at the same speed, 10 m/s, when they collide and…

A: Given:mass of each m1=m2 = 500 Kg speed u1=u2 = 10 m/s

Q: A car with two passengers traveling at 15 m/s collides with a tree. One of the passengers who is not…

A: Given that:- Speed of car=15m/s

Q: The of an object is defined as the product of its mass and its velocity O Momentum O Impulse O…

A: Momentum of an object is defined as product of its mass and  its  velocity. Momentum , p = mass ×…

Q: When a junk car is crushed into a compact cube, does its mass change? Its weight? Explain.

A: The mass of an object is the amount of matter that is present within the object. According to the…

Q: 33.- Two particles collide head-on in a perfectly inelastic manner as illustrated in the figure.…

A:

Q: A freight car weighing 20 tons and moving at a speed of 7 miles per hour on a horizontal track…

A:

Q: ناطرين Ex2) In 1896 in Waco, Texas, William Crush parked two locomotives at opposite ends of a…

A: The weight of each locomotive is given as, W = W1 = W2 = 1.2×106 N The distance between the two…

Q: A 10.5 kg object is moving with a velocity of 2.5 ms-1. If its velocity is increased to 5.5 ms-1,…

A:

Q: \zb In Newton's law a unit of force is equal to kg x M / S² why e 11:13

A: We Know, Force(F) = Mas(M) * Acceleration(A)

Q: The owner of a coffee shop (named "Local Area Network") proudly hangs a new sign out in front her…

A:

Q: 11) Which of the following represents the power generated by a liquid flowing o of a hole of area A…

A:

Q: 1) A 1.7x10³ slug bullet moving at 672 mph passes through a 1% inch thick sheet of foam plastic and…

A: Mass of slug bullet (m)=1.7×10-3kg Initial Velocity of bullet u=672mph=1081.45 kmh=300 m/s Velocity…

Q: Conceptual question: Someone claims that a car doubling its speed (say from 30 mph to 60 mnh) thot…

A: Given:-  The speed of the car vi = 30 mph = 13.412 m/s  The speed of the car vf = 60 mph = 26.82 m/s…

Q: In an equation of elastic colistion, let's say there are two balls. Ball (A) is colliding into Ball…

A: Given: elastic collision  To Find: weight of ball and definition of rebound

Q: 10) A 2000kg car and a 1000kg car traveling at 60m/s in opposite directions collide head on and lock…

A:

Q: A machine gun is fired at a steel plate. Is the force on the plate from the bullet impact greater if…

A: The given situation is described by using conservation of momentum and the fact that change in…

Q: What is more effective to knock down a bowling pin. A gold ball or bowling ball? Why ?

A: A gold ball has linear momentum only when it hits a bowling pin. When a body with linear momentum…

Q: When a rocket-propelled ship launches from the ground, it expels exhaust gas from the bottom of the…

A: In this problem, it is asking why the ship is able to leave the ground when a rocket-propelled ship…

Q: A heavy bucket with an empty mass of 4 Kg is filled with 5 Kg of liquid. The bucket is pull up from…

A:

Q: A 2-kg object moving to the right with a speed of 4 m/s makes a head-on, elastic collision with a…

A:

Q: Find the estimated VO2 in ml/kg/min for cycling on a monk stationary cycle at 60 rev/min at a…

A:

Q: 5. A railroad diesel engine weighs 5 times as much as a freight car. If the diesel engine coasts at…

A: We know that rate of change of momentum is directly proportional to external force applied. In the…

Q: What happens to the raft? Explain.

A: If external force on a system is zero then position of center of mass of system with respect to any…

Q: A small ball of mass m is aligned above a larger ball of mass M-1.6 kg (with a slight separation, as…

A: Mass of basket ball: M= 1.6 kg Height from both balls gets dropped: h = 1.6 m Conservation of…

Q: 1. Ball A of mass 400 g and velocity 4 ms¹ collides with ball B of mass 600 g and velocity 10 m s¹¹.…

A:

Q: When a car starts suddenly, the front of the car rises to the top, explain this.

A: It is required to explain why the front of the car rises to the top when it starts suddenly.

Q: What is the effect of changing the masses of the objects? What is the effect of altering the…

A: Answer:-  We know that  Gravitational force (F) = (G m1 m2)/(r2)  The effect of changing the masses…

Q: 9. You are investigating a car wreck. Mr. Q was traveling east in an 1800 lb car and collided with…

A:

Q: (a) Apply Newton's first law to each of the following situations. In which situations can you…

A: Newton first law of motion states that if a body is at rest or under uniform motion in a straight…

Q: If you place two apples on a table 5 cm apart, they will stay there until you move them.  Why don't…

A: When two magnets are placed on table 5 cm apart then due to magnetism property both magnet attract…

Q: A ball of 150 g mass moves with 12 m/s and bounces back after hitting a wall with 20 m/s after a…

A: Given data: Mass (m) = 150 g = 0.150 kg Initial velocity (v0) = 12 m/s Final velocity (v) = 20 m/s,…

Q: What is the speed of a 6-kg ball with a momentum of 72 kg-m/s? 12 m/s O 64 m/s 066 m/s 10 m/s

A: Given value--- mass = 6 kg . momentum = 72 kg m/s. We have to find--- speed ?

Q: A circular shaped copper  metal with mass of  20  kg has  the  same  diameter  as a circular shaped…

A: given : mass of copper metal = 20 Kg  mass of zinc metal = 15 kg height from ground = 8m

Q: "A 200 gram ball "A follows another ball "B of the same mass at a speed of 5 m/s. Ball "B is…

A: From conservation of momentum,…

Q: VE12 m\s 37 degree 2 m 6 m Rebounded ball is projected with 37 degree with velocity 12 m\s after…

A:

Q: To win a prize at the county fair, you're trying to knock down a heavy bowling pin by hitting it…

A: Given the information:  To win the prize at the country fair, you must knock down the big bowling…

Q: A 700-g wooden block is resting on a frictionless surface when a 50-g bullet traveling at 150 m/s…

A: Data provided: Mass of wooden block(m1) = 700 g = 0.700 kg Initial velocity of wooden block(V1)= 0…

Q: A car travelling at a speed of 54 km/h is brought to rest in 90 s. Find the retardation and distance…

A: Given: Initial speed of the vehicle u=54 km/hr=54×518 m/s=15 m/s Final speed of the vehicle v=0 Time…

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!