D = V0 t + 1/2 A t2
50 = 15 + 1/2 (4) t2
35 = 2 t2
t = sqrt(35/2) = sqrt(17.5) = 4.183 seconds (rounded)
25 m/s
# A car is traveling at a constant velocity with magnitude . At the instant that the car passes a motor cycle officer, the motor cycle accelerates from rest with acceleration . # ## Sketch an graph of the motion of both objects. Show that when the motor cycle overtakes the car, the motorcycle has a speed twice that of the car, no matter what the value of . ## Let be the distance the motorcycle travels before catching up with the car. In terms of , how far has the motorcycle traveled when its velocity equals the velocity of the car?
The formula for constant speed is: distance = speed x time Solving for time, it turns out that you simply have to divide distance by speed.
D = 60T where T is expressed in hours.
No but parallel lines have a constant distance between them
25 m/s
# A car is traveling at a constant velocity with magnitude . At the instant that the car passes a motor cycle officer, the motor cycle accelerates from rest with acceleration . # ## Sketch an graph of the motion of both objects. Show that when the motor cycle overtakes the car, the motorcycle has a speed twice that of the car, no matter what the value of . ## Let be the distance the motorcycle travels before catching up with the car. In terms of , how far has the motorcycle traveled when its velocity equals the velocity of the car?
constant speed
1.75 m/s^2
It was 6.25 ms^-2
(Its speed) x (time it spends traveling).
Not necessarily. The distance a car travels is determined by its speed and the time it spends traveling. If a car is traveling at a slower speed but for a longer period of time, it may not cover as much distance as a car traveling at a faster speed but for a shorter period of time. So, the longest time does not always correspond to the greatest distance traveled.
No. In general, for the simplified case of constant speed, use the formula: distance = speed x time
No. In general, for the simplified case of constant speed, use the formula: distance = speed x time
The formula for constant speed is: distance = speed x time Solving for time, it turns out that you simply have to divide distance by speed.
The standard formula for constant speed problems: distance = speed x time In this case, you need to divide the distance by the speed.
The formula, distance = speed x time, or speed = distance / time, assumes constant speed. If the speed changes, then the formula speed = distance / time will give you the average speed over the time period. To get the instantaneous speed in this case, you must divide distance / time for a very short time interval.