A ball rolls onto the path of your car as you drive down a quiet neighborhood street. To avoid hitting the child that runs to retrieve the ball, you apply your brakes for 1.15 s. The car slows down from 15.0 m/s to 9.00 m/s. The mass of the car is 1220 kg. (a)During the time the brakes were applied, what was the average force (in N) exerted on your car? magnitude ___________ N direction   ( forward or backward)   (b)How far (in m) did the car move while braking? ____________ m

Q: Two blocks, both with mass m, are at rest on top of each other when a hand pushes the bottom block…

A:

Q: A 20.0 kg wood ball hangs from a 1.10 m -long wire. The maximum tension the wire can withstand…

A:

Q: Traveling at a speed of 12.1 m/s, the driver of an automobile suddenly locks the wheels by slamming…

A:

Q: 4. A biker is accelerating when she applies the brakes and then speeds up again. The net horizontal…

A:

Q: 2. A block of mass m = 3.0 kg is acted on by a force with a magnitude of |F| = 25 N that acts at…

A:

Q: a)The distance between two telephone poles is 43m. When a 1.59 kg bird lands on the telephone wire…

A: A) Distance between poles (L) = 43 m mass of bird (m) = 1.59 kg wire sags by an amount (h) = 0.124 m…

Q: Problem 1: A yo-yo is released as shown. The inner radius (where the string winds up) is 0.74 cm,…

A: Given data: Inner radius, r=0.74 cm=7.4×10-3m Outer radius, R=4.1 cm=41×10-3m Mass of yo-yo, m=440…

Q: Traveling at a speed of 14.2 m/s, the driver of an automobile suddenly locks the wheels by slamming…

A: Given that: u=14.2 m/sv=?μ=0.59t=1.14 secg=9.8 m/s2

Q: 7. A 5-kg box with Initial speed 4 m/s slides across the floor and comes to a stop after 0.7 s. (a)…

A: We are given a box moving over a surface with some friction. The time required by box to stop is…

Q: 1A. A 3.00 kg mass is initially at rest on a horizontal surface. An applied force of 25.0 Ni then…

A:

Q: A 1540-kg car is traveling with a speed of 12.4 m/s. What is the magnitude of the horizontal net…

A:

Q: 11. Easy Only two forces act on an object (mass = 3.00 kg), as in the drawing. Find the magnitude…

A:

Q: A 1.5-kg mass has an acceleration of (4.0i - 3.0j) m/s². Only two forces act on the mass. If one of…

A:

Q: A 1.0 × 10³-kg plane is trying to make a forced landing on the deck of a 2.0 × 10³-kg barge at rest…

A: The frictional force on the plane is, f = 14×weight of plane = 14×1×103×10 = 2500N So, the…

Q: A car traveling at 29.6 m/shits a bridge abutment. A passenger in the car, who has a mass of 57.0…

A: From the equation of motion,

Q: A block with mass m1 = 7.5 kg rests on the surface of a horizontal table which has a coefficient of…

A: According to the company policy, first three parts would be answered. Please post the rest…

Q: ou go trick-or-treating with your friends and end up with more candy than you know what to do with.…

A: The magnitude of normal force acting on the bag  is, FN=mg-Fsinθ=8.7 kg9.8 m/s2-62 Nsin57°=33.3 N…

Q: At an instant when a soccer ball is in contact with the foot of the player kicking it, the…

A:

Q: Which one of the following statements concerning this situation is true? a) The space capsule does…

A: a) option is incorrect as space capsule is experiencing a force due to which it will accelerate.…

Q: A box (400 kg) sits inside the trailer of a semitruck traveling at a speed of 25 m/s (~ 55 mph).…

A: As per the guide lines first three sub parts are answered. Kindly post the remaining question as a…

Q: Calculate the magnitude of a normal force on a 22.7 kg block in the following circumstances. a. the…

A: Answer :-  a) N = mg  = 22.7 × 9.8 = 222.46 N (b) N = m g cos40.8° = 22.7 × 9.8 × cos40.8°       =…

Q: At t = 0, an object of mass m is at rest at x = 0 on a horizontal, frictionless surface. A…

A:

Q: 6. A car of mass M₁ = 3.0 kg (and frictionless wheels) is connected by a light string over a…

A: The mass of the car m1=3 Kg mass of the block  m2=1.0 Kg