A plane flying at 80 m/s is uniformly accelerated at the rate of 2.0 m/s^2. What is the distance it will travel during a 10 s interval after acceleration begins? Answer: m
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- Albert is riding his scooter at a velocity of 52 km⁄ℎ? when he sees an old woman crossing the road 30 meters away. He immediately steps hard on the brakes to get a maximum deceleration of 8 m/s^2 . How far will he go before stopping? Will he hit the old woman?An astronaut is on a new planet. She discovers that if she drops a space rock from 15.55 m above the ground, it has a final velocity 4.18 m/s of just before it strikes the planet's surface. What is the acceleration due to gravity on the earth? Round your answer to 2 decimal places.of the ball when the goale bas vied muotizem z 2000 jeval alg Question 6. A golf ball rolls off a horizontal cliff with an initial speed of 10.3 m/s. The ball falls a vertical distance of 11.6 m into a lake below. (a) How much time does the ball spend in the air? (b) What is the speed v of the ball just before it strikes the water? Ans: 1.54 s; 18.36 m/s
- Two children are playing on a 151-m-tall bridge. One child drops a rock (initial velocity zero) at t = 0. The other waits 1.1 s and then throws a rock downward with an initial speed Vo. If the two rocks hit the ground at the same time, what is vo? m/sA particle undergoes uniformly accelerated motion. Its velocity at an instant is 10. m/s. After 3.0 s, its velocity will become 16 m/s. What is its velocity 2.0 s before the given instant?A plane accelerates from rest at a constant rate of 5.00 m/s2 along a runway that is 1800 m long. Assume that the plane reaches the required takeoff velocity at the end of the runway. What is the distance dlast traveled by the plane in the last second before taking off?
- A skydiver jumps out of a helicopter and falls freely for 6.0 s before opening the parachute. (a) What is the skydiver's downward velocity when the parachute opens? m/s (b) How far below the helicopter is the skydiver when the parachute opens?S roller coaster rapidly picks up speed as it roles down a slope. As it startx down the slope the speed is 4 m/s. But 3 seconds later, at the bottom of the slope its speed is 22 m/s. What is the average acceleration.The Tiida is a vehicle in motion from rest and accelerating at a rate of 4 m / s2 over a distance of 20 m. What is the vehicle's speed and how long does it take to travel n 20?
- A high-performance sports car can go from 0 to 100 mph (44.7 m/s) in 7.9s. a) What is the car's average acceleration? b) The same car can come to a complete stop from 30 m/s in about 3.2s. What is its average acceleration?An astronaut on a strange planet finds that he can jump a maximum horizontal distance of 16.0 m if his initial speed is 2.60 m/s. What is the free-fall acceleration on the planet? (Ignore air resistance.)Answers: (a) 1.79 s (b) -25.5 m/s j 15. A ball is thrown vertically upward with an initial speed of 25.0 m/s. a) How high does it rise above the position from where it was released? b) How long does it take to reach its highest point? c) What total time in the ball in the air for if returning to its initial elevation? d) What is its velocity when it returns to the position from which it was thrown? Answers: (a) 31.9 m (b) 2.55 s (c) 5.10 s (d)-25.j 24