In a car crash, a car going 40 km/hr takes 0.8 seconds to come to rest...
a car is taveling at 80 km/hr in a school. A police car is at rest in the parking lot of the school. It takes the policeman 0.5 sec to react before he begins accelerating after the speeder with an acceleration of 8 m/sec square. A) how far has each car traveled when the police car catches the speeder B) how fast is the police car going when it catches the speeder?
A race car initially moving at 215 km/hr comes smoothly to rest with an acceleration of 12 km/hr2. How long does it take the car to come to a complete stop? Express your answer in seconds.
1. A car is traveling at 36 km/hr and the driver puts on the brakes, bringing the car to rest in a time of 2s. What is the magnitude of the average acceleration of the car.
At a constant speed it takes a car 10 seconds to circumnavigate a traffic circle (a.k.a. round-about, roundie, rotary) where the path of travel has a diameter of 20.3 m. Determine the acceleration of the auto in km/hr/s. determine the angular velocity of travel in rad/hr.
A 2200-kg car is moving with an initial velocity of 72 km/h. After 12 seconds the car has slowed down to 27 km/h. What is the net force that produces the deceleration?
A car of mass 1000 Kg descends a hill inclined with horizontal by 30°, the car is traveling at 80 km/h is uniformly brought to rest over a distance of 40 m. Calculate using work-energy method the average braking force required. The resistance to the motion is 200 N. 40 0 = 30°
A 2000 kg car traveling at 90 km/hr crashes into a concrete abutment causing the front end to collapse 0.40 m. Assume an inelastic collision and estimate (a) the duration of the collission in secs and (b) the average impulsive force of the abutment on the car in kN.
In a performance test, each of two cars takes 8.9 s to accelerate from rest to 28 m/s. Car A has a mass of 1429 kg, and car B has a mass of 1889 kg. Find the net average force that acts on (a) car A and (b) car B during the test.
The velocity graph of an accelerating car is shown. v (km/h) 60 40 201 t(seconds) 12 18 (a) Estimate the average velocity Vave of the car during the first 18 seconds. Use the Midpoint Rule with n = 3. (Round your answer to the nearest whole number.) Vave = km/h (b) At what time t was the instantaneous velocity equal to the average velocity? (Round your answer to one decimal place.) S Need Help? Read it Talk to a Tutor
Please help me solve questions 6 6) A 50 kg person on a scale is in an elevator. The elevator is at rest for 3 seconds. Then it takes 0.8 seconds to accelerate to 6 m/s moving down. It moves elevator then takes 1.2 seconds to slow to a stop. at this speed for 5 seconds. The 6a) Draw an FBD of the situation during both of the accelerations. 42 What is the acceleration of the person during the first...