The parachute on a race car of weight 8930 N opens at the end of a...
The parachute on a race car of weight 8930 N opens at the end of a quarter mile run when the car is traveling at 30.7 m/s. What total retarding force must be supplied by the parachute to stop the car in a distance of 1040 m?
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The parachute on a race car of weight 8930 N opens at the end of
a...
Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the...
Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the track is a turn with a radius of approximately 57.0 m . If the track is completely flat and the race car is traveling at a constant 30.5 m/s (about 68 mph ) around the turn, what is the race car's centripetal (radial) acceleration? centripetal acceleration: m/s2 Which force is responsible for the centripetal acceleration in this case? friction, normal ,gravity , or weight...
Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the...
Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the track is a turn with a radius of approximately 57.0 m. If the track is completely flat and the race car is traveling at a constant 27.5 m/s (about 62 mph) around the turn, what is the race car's centripetal (radial) acceleration? centripetal acceleration: 12.19 m/s2 Incorrect Which force is responsible for the centripetal acceleration in this case? O weight gravity friction normal What...
When a parachute opens, the air exerts a large drag force on it.This upward force is initially greater than the weight...
When a parachute opens, the air exerts a large drag force on it.This upward force is initially greater than the weight of the skydiver and, thus, slows him down. Suppose the weight of the skydiver is 915 N and the drag force has a magnitude of 1027 N. Themass of the sky diver is 93.4 kg. What are the magnitude anddirection of his acceleration?
A 3900 kg car is parked at the top of an 8.7 m long driveway that...
A 3900 kg car is parked at the top of an 8.7 m long driveway that is sloped at 17? with the horizontal. The parking brake fails. If an average friction force of 4200 N im- pedes the motion, find the speed of the car at the bottom of the driveway. The acceleration of gravity is 9.8 m/s2 . Starting from rest, a 10.0 kg suitcase slides 3.00 m down a frictionless ramp inclined at 31.0? from the floor. The...
A race car rounds one end of a speedway. This end of the track is a...
A race car rounds one end of a speedway. This end of the track is a turn with a radius r of approximately 187 ft. If the track is assumed to be completely flat and the race car is traveling at a constant 67.00 mi/h around the turn, what is the race car's centripetal (radial) acceleration ac? 1) ac= ft/s2 Convert this result to SI units. 2) ac= m/s2 3) What is the force responsible for the centripetal acceleration in...
When a parachute opens, the air exerts a large drag force on it. This upward force...
When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 964 N and the drag force has a magnitude of 1022 N. The mass of the sky diver is 98.4 kg. Take upward to be the positive direction. What is his acceleration, including sign?
11. A car initially traveling at 29.0 m/s undergoes a con- ostant negative acceleration of magnitude...
11. A car initially traveling at 29.0 m/s undergoes a con- ostant negative acceleration of magnitude 1.75 m/s after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.330 m? (b) What is the angular speed of the wheels when the car has traveled half the total distance? LILAA OI n JO 21. A 55.0-kg ice skater is...
A 75,000 N weight truck hits the rear bumper of the 15,000 N weight car at...
A 75,000 N weight truck hits the rear bumper of the 15,000 N weight car at a stop light. What is the ratio of the collision force the truck puts on the car compared to the force the car puts on the truck?
Questions about a 700 kg car: 1.) What is the work required (in J) to stop...
Questions about a 700 kg car: 1.) What is the work required (in J) to stop the car if it is going 20 m/s and stops in a distance of 35m? 2.) Now suppose the car were traveling 40 m/s. What is the work required (in J) to stop it? 3.) What distance (in m) is required for the car in the previous provlem to stop when traveling 40 m/s? Thanks
A 1343 kg car pulls a 415 kg trailer. The car exerts a 3389 N horizontal...
A 1343 kg car pulls a 415 kg trailer. The car exerts a 3389 N horizontal force against the ground in order to accelerate. Both the car and trailer feel a retarding friction force of 606 N opposing their motion. (a) What is their acceleration? m/s^2 (b) What is the tension in the cable connecting them? N
Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the track is a turn with a radius of approximately 57.0 m. If the track is completely flat and the race car is traveling at a constant 27.5 m/s (about 62 mph) around the turn, what is the race car's centripetal (radial) acceleration? centripetal acceleration: 12.19 m/s2 Incorrect Which force is responsible for the centripetal acceleration in this case? O weight gravity friction normal What...
11. A car initially traveling at 29.0 m/s undergoes a con- ostant negative acceleration of magnitude 1.75 m/s after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.330 m? (b) What is the angular speed of the wheels when the car has traveled half the total distance? LILAA OI n JO 21. A 55.0-kg ice skater is...
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