The speed of the ball during the final 2 seconds likely decreased as it experienced air resistance and friction from contact with the ground. Without additional information, we can only infer that the ball's speed reduced gradually until it came to a stop.
If a car is speeding up, its initial speed is less than its final speed. As the car accelerates, its speed increases over time, so the initial speed is lower than the final speed attained during acceleration.
A skydiver is increasing their speed during the first three seconds of free fall due to gravity pulling them downwards. As the skydiver falls, their speed will continue to increase until they reach terminal velocity.
There is a formula to calculate the speed of a car after accelerating for four seconds. This formula is v = u + at, where v = velocity, u = initial velocity, a = acceleration, and t = the time it takes to accelerate.
To find the average speed during acceleration, you can calculate the average speed as the initial speed plus the final speed divided by 2. If you know the initial and final velocities, you can find the average speed over that acceleration period. Alternatively, you can use the formula: average speed = total distance traveled / total time taken.
The calculation depends on the available data. For example, if you have the corresponding information, you can subtract the final speed by the initial speed, then divide the result by the 15 seconds. This will give you the average acceleration for those 15 seconds.
87.5mi/hr2
Not enough information. You also need to know how much the acceleration is. Once you know that, calculate the final speed, then calculate the average speed as (initial speed + final speed) / 2, and multiply that by the time to get the distance.
-- Your speed after 30 seconds will be 30 meters per second.-- Since your acceleration is constant, your average speed during the 30 secondsis the average of your initial and final speed . . . 15 meters per second.-- The distance you cover is your average speed for 30 seconds = 15 x 30 = 450 meters.
2 m/s
If a car is speeding up, its initial speed is less than its final speed. As the car accelerates, its speed increases over time, so the initial speed is lower than the final speed attained during acceleration.
Since the car accelerates uniformly, its average speed during the interval is1/2 (initial speed + final speed) = 1/2 (4.15 + 17.11) = 10.63 m/s.The distance covered is (average speed) x (time) = (10.63) x (4.8) = 51.024 meters.If the motion during the 4.8 seconds was all in the same direction along a straight line,then that same 51.024 meters is also the displacement during that time.If, instead, it happened to take 4.8 seconds to go around a circle with a circumferenceof 51.024 m, then the displacement over the 4.8 seconds is zero, since the starting lineis also the finish line.
Increasing.
25mph
To find the average speed from 4 seconds to 8 seconds, you need the total distance traveled during that time interval and the total time taken. The average speed is calculated by dividing the total distance by the total time (4 seconds in this case). If you provide the distance traveled during that period, I can help you calculate the average speed.
Her final speed is 14.5 m/s. The kinematics equation v = at + v0 will be useful here. Note that t is the time measured in seconds, a is the acceleration, v0 is the initial velocity, and v is the velocity after t seconds (the final velocity). We are given that v0 = 10 m/s, a = 0.500 m/s2, and t = 9 s. Using the above kinematics equation we get v = (0.500 m/s2)(9 s) + 10 m/s = 14.5 m/s. Since speed = |velocity|, then her final speed = |14.5 m/s| = 14.5 m/s.
A skydiver is increasing their speed during the first three seconds of free fall due to gravity pulling them downwards. As the skydiver falls, their speed will continue to increase until they reach terminal velocity.
There is a formula to calculate the speed of a car after accelerating for four seconds. This formula is v = u + at, where v = velocity, u = initial velocity, a = acceleration, and t = the time it takes to accelerate.