a 15,000N car travels 45km / h quickly north on a street, and a 7500N car...
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a 15,000N car travels 45km / h quickly north on a street, and
a 7500N car...
A small compact car with a mass of 1000 kg is traveling north towards an intersection...
A small compact car with a mass of 1000 kg is traveling north towards an intersection at a speed of 15 m/s. A truck with a mass of 2000 kg is traveling east at 10 m/s on the cross street approaching the same intersection. The two vehicles collide and stick together. a. What is the magnitude and direction of the velocity of both vehicles after the collision? b. How much energy was lost during the collision?
1. A car travels 30 miles north, then 10 miles east. The displacement vector is X...
1. A car travels 30 miles north, then 10 miles east. The displacement vector is X miles north, Y miles east. A) What is X? B) What is Y? 2. A car travels 30 miles north, then 10 miles east, then 20 miles west, then 2 miles south. The displacement vector is X miles north, Y miles east. A) What is X? B) What is Y? (beware of signs) 3. A car travels 30 miles northwest. The displacement vector is...
A car of mass m 2000.0kg is moving at speed vi25.0 m/s towards East. A truck...
A car of mass m 2000.0kg is moving at speed vi25.0 m/s towards East. A truck of mass m2 6000.0kg is moving at speed v2i-10.0m/s towards North. They collide at an m1- intersection and get entangled (complete inelastic collision). 1. What is the magnitude and direction of the final velocity of the entangled automobiles? 2. How much kinetic energy is lost in the collision. That is, calculate the change in the kinetic energy of the system
28. A car travels due north at a speed of 55 km/h. The traces of rain...
28. A car travels due north at a speed of 55 km/h. The traces of rain on the side windows of the car make an angle or - agrees with respect to the horizontal. Ir the rain is falling vertically with respect to the Earth, what with respect to the Earth? a. 48 km/h b. 95 km/h c. 58 km/h a 32 km/h e. 80 km/h ANSWER: 0
please ansa all A car travels around a curve with constant speed. The correct statement from...
please ansa all
A car travels around a curve with constant speed. The correct statement from the following is the car has an acceleration directed inward toward the center of the curve. the velocity of the car is constant. the car has an acceleration direction outward from the center of the curve. the car has zero acceleration. the car has an acceleration directed in the instantaneous direction of the velocity vector. A ball is whirled on the end of a...
Name 37) You have been hired as an expert witness in a crash investigation. Car A of mass 1900 kg crashed into stationary car B of mass 1000 kg. You measure the coefficient of kinetic friction betwee...
Name 37) You have been hired as an expert witness in a crash investigation. Car A of mass 1900 kg crashed into stationary car B of mass 1000 kg. You measure the coefficient of kinetic friction between the locked tires a was in park so the tires did not turn). Car A hits car B, locking bumpers so that they s bef nd the road to be 0.6 (car B kid off together. They skid 20 m ore coming to...
1. A 1,000 kg car moving north at 30 mph collides into a 2,000 kg truck...
1. A 1,000 kg car moving north at 30 mph collides into a 2,000 kg truck which is also moving north, but at 10 mph. Immediately after the collision, the truck’s speed is 13 mph. What is the speed of the car after the collision? Express your answer in mph and input the number only. 2. Was kinetic energy conserved in this collision? A. Yes B. No 3. What type of collision was this? A. Perfectly inelastic B. Inelastic C....
please answer all 5 questions , please ... thanks A rock is thrown horizontally from the...
please answer all 5 questions , please ... thanks
A rock is thrown horizontally from the top of a 10 m cliff with an initial horizontal velocity of 10 m/s. It has a Kinetic energy of 78 J when it in at a height of 3.0 m above the ground. If 20% of its initial mechanical energy is used in against the air friction, the mass of the rock is: 0.5 kg 1.0 kg 1.5 kg 2.0 kg None of...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 2.20...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
EXAMPLE 6.8 Collision at an Intersection GOAL Analyze a two-dimensional inelastic collision. 25.0 m/s +20,0 m/s...
EXAMPLE 6.8 Collision at an Intersection GOAL Analyze a two-dimensional inelastic collision. 25.0 m/s +20,0 m/s A top view of a perfectly inelastic collision between a car and a van. PROBLEM A car with mass 1.50 x 103 kg traveling east at a spegd of 25.0 m/s collides at an intersection with a 2.50 x 10 kg van traveling north at a speed of 20.0 m/s, as shown in the figure. Find the magnitude and direction of the velocity of...
1. A car travels 30 miles north, then 10 miles east. The displacement vector is X miles north, Y miles east. A) What is X? B) What is Y? 2. A car travels 30 miles north, then 10 miles east, then 20 miles west, then 2 miles south. The displacement vector is X miles north, Y miles east. A) What is X? B) What is Y? (beware of signs) 3. A car travels 30 miles northwest. The displacement vector is...
A car of mass m 2000.0kg is moving at speed vi25.0 m/s towards East. A truck of mass m2 6000.0kg is moving at speed v2i-10.0m/s towards North. They collide at an m1- intersection and get entangled (complete inelastic collision). 1. What is the magnitude and direction of the final velocity of the entangled automobiles? 2. How much kinetic energy is lost in the collision. That is, calculate the change in the kinetic energy of the system
28. A car travels due north at a speed of 55 km/h. The traces of rain on the side windows of the car make an angle or - agrees with respect to the horizontal. Ir the rain is falling vertically with respect to the Earth, what with respect to the Earth? a. 48 km/h b. 95 km/h c. 58 km/h a 32 km/h e. 80 km/h ANSWER: 0
please ansa all
A car travels around a curve with constant speed. The correct statement from the following is the car has an acceleration directed inward toward the center of the curve. the velocity of the car is constant. the car has an acceleration direction outward from the center of the curve. the car has zero acceleration. the car has an acceleration directed in the instantaneous direction of the velocity vector. A ball is whirled on the end of a...
Name 37) You have been hired as an expert witness in a crash investigation. Car A of mass 1900 kg crashed into stationary car B of mass 1000 kg. You measure the coefficient of kinetic friction between the locked tires a was in park so the tires did not turn). Car A hits car B, locking bumpers so that they s bef nd the road to be 0.6 (car B kid off together. They skid 20 m ore coming to...
please answer all 5 questions , please ... thanks
A rock is thrown horizontally from the top of a 10 m cliff with an initial horizontal velocity of 10 m/s. It has a Kinetic energy of 78 J when it in at a height of 3.0 m above the ground. If 20% of its initial mechanical energy is used in against the air friction, the mass of the rock is: 0.5 kg 1.0 kg 1.5 kg 2.0 kg None of...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
EXAMPLE 6.8 Collision at an Intersection GOAL Analyze a two-dimensional inelastic collision. 25.0 m/s +20,0 m/s A top view of a perfectly inelastic collision between a car and a van. PROBLEM A car with mass 1.50 x 103 kg traveling east at a spegd of 25.0 m/s collides at an intersection with a 2.50 x 10 kg van traveling north at a speed of 20.0 m/s, as shown in the figure. Find the magnitude and direction of the velocity of...
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