55/6 = 9.16666...mph/s
-10 mph/sec
-4 mph/sec (Study Island Answer)
It all depends upon the acceleration. A fast car can probably do it in under 10 seconds. Driving economically would take much longer. A jet plane can do it quicker.
a = (vf - v0)/Δt 10 mph/s = (45 mph - 20 mph)/Δt Δt = 2.5 s
About 163 mph
Acceleration = Change in speed/Time Time = Change in Speed/Acceleration = 65mph/20mph per s = 65/20 seconds = 3.25 seconds
-10 mph/sec
-4 mph/sec (Study Island Answer)
20 mph/s North
The formula for finding time based on acceleration and speed is: (Delta)t = (Delta)v/a Change in time = change in speed / acceleration t = 75-15 / 20 t = 60 / 20 t = 3 seconds
If you went 800 feet in 10 seconds, you would be going 800/10 = 80 feet per second, 237,600 mph.
40 mph/5 sec = 8 mph per second. That happens to be within a few percent of the gravitational acceleration on the surface of Mars. In other words, if you dropped Mike onto Mars from a small distance above the surface, his descent rate would go from zero to 40 mph in about 5 seconds. Whereas, in the same 5 seconds spent falling to Earth, his descent rate would go from zero to almost 110 mph.
There is no such thing as 20 mph acceleration. 20 mph is a velocity. Acceleration is expressed as velocity per unit time e.g. mph per second or mph per minute etc.
The acceleration of the roller coaster would be 88 MPH. This was figured out by doing math.
It goes from 0 mph to 80 mph in 1.8 seconds Acceleration = change in speed/time taken = (80 - 0)/1.8 mph per second = 44.4 mph per sec
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