The speed of a race car is recorded at 2 instants during the race: • at time t = 1.37 s the car's speed is 14.4 S • at time t = 3.54 s the car's speed is 23.3 S The car's average acceleration during this time is B s²
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- In 1967, New Zealander Burt Munro set the world record for an Indian motorcycle, on the Bonneville Salt Flats in Utah, with a maximum speed of 183.58 mi/h. The one-way course was 5.00 mi long. Acceleration rates are often described by the time it takes to reach 60.0 mi/h from rest. If this time was 4.00 s, and BL11t accelerated at this rate until he reached his maximum speed, how long did it take Burt to complete the course?In 1967, New Zealander Burt Munro set the world record for an Indian motorcycle, on the Bonneville Salt Flats in Utah, of 295.38 km/h. The one-way course was 8.00 km long. Acceleration rates are often described by the time it takes to reach 96.0 km/h from rest. If this time was 4.00 s and Burt accelerated at this rate until he reached his maximum speed, how long did it take Burt to complete the course?There is a distinction between average speed and the magnitude of average velocity. Give an example fiat illustrates the difference between these two quantities.
- v (m/s)↑ 20아 20 30 40 10 (s) -20- An object begins at position x = 0 and moves one-dimensionally along the x-axis with a velocity v expressed as a function of time t according to the graph above. At what time does the object pass through x = 0 again? а. Between 10 s and 20 s b. Between 20 s and 30 s At 30 s exactly d. Between 30 s and 40 s c.Find the final speed (in m/s) of the skier starting from rest. Part (b) How long (in s) does it take for the skier to reach the bottom of this hill starting from rest? •Part (c) Find the final speed (in m/s) of the skier starting with a speed of 2.50 m/s. Part (d) How long (in s) does it take for the skier to reach the bottom of this hill with a starting speed of 2.50 m/s?Ilya and Anya each can run at a speed of 7.50 mph and walk at a speed of 3.10 mph. They set off together on a route of length 5.00 miles. Anya walks half of the distance and runs the other half, while Ilya walks half of the time and runs the other half. a) How long does it take Anya to cover the distance of 5.00 miles b) Find anya average speed in miles per hours C) How long does it take liya to cover the distance of 5.00 miles D)Find liya average speed in miles per hours
- A skier starts from rest down a slope 500.0 m long. The skier accelerates at a constant rate of 2.00 m/s squared. • a. Find the velocity of the skier at the bottom of the slope. Do this by deriving two separate equations for time and then making the expressions equal to each other to solve for the second velocity. • b. Using the distance down the hill, and the two velocities, determine the time it took to descend the hill.V constant Question 2 5 pts A car slows down from 50 mph to 35 mph in 5 seconds. Calculate its acceleration (or deceleration). -3 m/h/s 3 m/h/s O 17 m/h/s 4 m/h/s Question 3 5 ptsA cheetah can accelerate from rest to 23.5 m/s in 2.00 s. Assume that the acceleration is constant over the time interval. A) What is the magnitude of the acceleration of the cheetah? in M/S^2 B) What is the distance traveled by the cheetah in these 2.00 s? in M C) A runner can accelerate from rest to 7.90 m/s in the same time, 2.00 s. What is the magnitude of the acceleration of the runner? in m/s^2
- elearn.squ.edu.om/mod/quiz/ NG SYSTEM (ACADEMIC) al Physics I- Spring21 Time left 0:18:56 The runway of an airport in Oman has been designed such that the lowest acceleration for a plane to take off is 14.3 m/s?. The take-off speed for this plane will be 54.9 m/s. Assuming this minimum acceleration, then the minimum allowed length (m) for the runway is: O a. 105.38 O b. 52.69 O c. 421.54 O d. 210.77 A car travels along the vector d1 = 4.6i+3.1 (m). and then travels along the vector d2 = 2,41+5.81(m). How far isA car moving initially with speed v0 slows down with an acceleration of magnitude a 6) and comes to a full stop after traveling a distance d. What was the speed of the car when it had traveled half that distance, d/2? A) v0/2 B) v0/4 C) v0/8 D) v0/ square root 2e-Services Academic Departments ETC CIMS Portal Reports Ibrahim Question 3 A bullet is fired from a gun. The bullet travels a distance L = 190 + 0.5 m during a time interval t= 0.5 ± 0.04 s. Not yet answered Marked out of 2.00 P Flag question The speed of the bullet (in m/s) can be calculated using the formula, Speed = L/t. Calculate the, a) Speed of the bullet (in m/s) = b) Fractional uncertainty in the speed = C) Absolute uncertainty (in m/s) in the speed =