A.) In a fit, a toddler throws straight down his favorite 3 kg toy with an...
A.) In a fit, a toddler throws straight down his favorite 3 kg toy with an initial velocity of 2.5 m/s. What is the magnitude of the change in velocity of the toy from t = 0.24 seconds to t = 0.48 seconds?
B.) A motor spins a disk (Idisk = 24.4 kg*m2) with a torque of 40 N*m, and a 19 N frictional force acts on the disk at a radius of 1.6 m. Attached to the disk at a radius of 2.3 m is a 19 kg mass. What is the magnitude of the angular acceleration in rad/s2 of the system?
C.) A 1.8-kg projectile is fired from level ground. The vertical component of the initial velocity is 27 m/s and the horizontal component is 25 m/s. Ignore air resistance and the curvature of the earth in this problem. How far in meters does the projectile travel horizontally?
D.) A 5 kg ball (Ball A) traveling to the right at 5 m/s collides with a 4 kg ball (Ball B) at rest. After the collision, the 4 kg ball (Ball B) is traveling to the right at 5.556 m/s. What is the final velocity of Ball A?
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A.) In a fit, a toddler throws straight down his favorite 3 kg
toy with an...
In a fit, a toddler throws straight down his favorite 1 kg toy with an initial...
In a fit, a toddler throws straight down his favorite 1 kg toy with an initial velocity of 2 m/s. What is the magnitude of the velocity in m/s of the toy when it strikes the ground 0.3 seconds later?
4. In a fit, a toddler throws straight down his favorite 2 kg toy with an...
4. In a fit, a toddler throws straight down his favorite 2 kg toy with an initial velocity of 1.7 m/s. What is the magnitude of the change in velocity of the toy from t = 0.22 seconds to t = 0.42 seconds? 7. Two people play tug of war. The 100-kg person on the left pulls with 1,140 N, and the 70-kg person on the right pulls with 835 N. Assume that neither person releases their grip on the...
A 5 kg ball traveling to the right at 5 m/s collides with a 4 kg...
A 5 kg ball traveling to the right at 5 m/s collides with a 4 kg ball at rest. After the collision, the 4 kg ball is traveling to the right at 5.556 m/s. What is the velocity of the ball on the left after the collision? A motor spins a disk (Idisk = 24.4 kg*m2) with a torque of 39 N*m, and a 10 N frictional force acts on the disk at a radius of 2 m. Attached to...
11. A motor spins a disk (Idisk = 24.2 kg*m2) with a torque of 39 N*m,...
11. A motor spins a disk (Idisk = 24.2 kg*m2) with a torque of 39 N*m, and a 18 N frictional force acts on the disk at a radius of 1.3 m. Attached to the disk at a radius of 1.8 m is a 10 kg mass. What is the magnitude of the angular acceleration in rad/s2 of the system? 12. A 1.4-kg projectile is fired from level ground. The vertical component of the initial velocity is 83 m/s and...
A motor spins a disk (Idisk = 25.9 kg*m^2) with a torque of 38 N*m, and...
A motor spins a disk (Idisk = 25.9 kg*m^2) with a torque of 38 N*m, and a 19 N frictional force acts on the disk at a radius of 1.5 m. Attached to the disk at a radius of 1.5 m is a 5 kg mass. What is the magnitude of the angular acceleration in rad/s^2 of the system?
13. A 33 kg mass is separated from a 19 kg mass by 5 meters. What...
13. A 33 kg mass is separated from a 19 kg mass by 5 meters. What is the magnitude of the gravitational force in Newtons on the 33 kg mass? 14. A 5 kg ball (Ball A) traveling to the right at 5 m/s collides with a 2 kg ball (Ball B) at rest. After the collision, the 2 kg ball (Ball B) is traveling to the right at 7.143 m/s. What is the final velocity of Ball A?
p mv Ap mv-mv 1. A 1,500 kg car is driving down the road when the...
p mv Ap mv-mv 1. A 1,500 kg car is driving down the road when the brakes are applied. If the car is initially traveling at 12 m/s and slows to a stop after a time of 4 seconds, please determine: a) the change in momentum of the car b) the net force acting on the car. A race car has a mass of 1,000 kg. It accelerates from an initial velocity of 30 m/s to a final velocity of...
1. A 5 kg ball traveling to the right at 7 m/s collides with a 3...
1. A 5 kg ball traveling to the right at 7 m/s collides with a 3 kg ball at rest. After the collision, the 3 kg ball is traveling to the right at 8.75 m/s. What is the velocity of the ball on the left after the collision? 2. A 100-kg box on the right and a 45-kg box on the left are tied together by a horizontal cable. The 100-kg box is acted upon by an external force of...
A disk of m=5 kg and radius r=2 m starts from rest and rolls down a...
A disk of m=5 kg and radius r=2 m starts from rest and rolls down a 20 degree incline from an initial height of 50 m. What is the linear velocity of the disk as it reaches the bottom of the incline? What is the rotational kinetic energy of the disk at the halfway point between the positions 1 and 2? If it takes 1.2 seconds for the disk to reach the bottom of the incline, find the magnitude of...
5. The figures on the right show a disk with radius, a = 0.20 m, and mass, M = 0.80 kg, resting on a frictionless table. One particle with mass, m1-M/4, with velocity, v- 4 m/s, slides along the stab...
5. The figures on the right show a disk with radius, a = 0.20 m, and mass, M = 0.80 kg, resting on a frictionless table. One particle with mass, m1-M/4, with velocity, v- 4 m/s, slides along the stable, and collides with the disk at the point shown. A second particle with mass, m2, moving with velocity v2-4v collides with the disk at the point shown. The two masses collide with the disk at the same time, and after...
p mv Ap mv-mv 1. A 1,500 kg car is driving down the road when the brakes are applied. If the car is initially traveling at 12 m/s and slows to a stop after a time of 4 seconds, please determine: a) the change in momentum of the car b) the net force acting on the car. A race car has a mass of 1,000 kg. It accelerates from an initial velocity of 30 m/s to a final velocity of...
5. The figures on the right show a disk with radius, a = 0.20 m, and mass, M = 0.80 kg, resting on a frictionless table. One particle with mass, m1-M/4, with velocity, v- 4 m/s, slides along the stable, and collides with the disk at the point shown. A second particle with mass, m2, moving with velocity v2-4v collides with the disk at the point shown. The two masses collide with the disk at the same time, and after...
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