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A train moves from rest to speed of 25 miles per second in 30 seconds What is the manitude of its acceleration?
Wiki User
∙ 14y ago
Using the equation a = (v-u)/t
where a = acceleration, v=final velocity, u=initial velocity and t=time,
v=25, u=0, t=30.
a=(25-0)/30
a=0.83 miles s^-2 (miles per second squared, or miles per second per second; not that any of them are particularly SI - try 1335.75552 m s^-2, or 1336 m s^-2)
Wiki User
∙ 14y ago
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What is the average speed from 100 miles in 50 seconds?
100 miles/50 seconds= 2 miles per second average speed
What does per second per second mean?
Per second per second or (/s/s) refers to the rate of acceleration. If you are standing still and you increase your speed at a rate of 5 feet per second per second that means after 1 second you'll be moving at 5 feet per second, after two seconds you'll be moving at 10 feet per second, after three seconds you'll be moving at 15 feet per second, and so on. Every second that goes by, 5 more feet per second will be added to your speed. So 5ft/s/s is a rate of acceleration. An easier example to understand, instead of per second per second, is per hour per second. If you are in a car that is standing still and you increase your speed at a rate of 5 miles per hour per second that means after 1 second you'll be traveling at 5 miles per hour. After 2 seconds your speed will have reached 10 mph. After 10 seconds you'll be traveling at 50mph. Each second that goes by you add 5mph to the speed.
What is a cars acceleration if it increases its speed from 5 to 20 in 3 seconds?
Acceleration = change in speed/time = (20-5)/3 = 15/3 = 5 units of speed per second. It is not possible to be any more precise because the unit of speed (kilometres per hour, miles per hour, metres per second) is unspecified.
How much force in Newtons does a baseball pitcher have to exert on a 250 g baseball to make it accelerate to 50 miles per second the instant that it leaves his hand?
Force = mass x acceleration Therefore you need to know what time it takes to accelerate the 250 gramme ball from zero to 50 miles per second. ( 50 mi/s is supersonic, did you mean 50mph?) Acceleration = (final velocity - initial velocity) divided by time. Therefore a = (80 467.2 m.s-1 - 0) / t seconds. Therefore force (Newtons) = 0.25 kilogramme x 80 467.2 m.s-1 / t seconds. (80 467.2 metres per second = 50 miles per second) (no baseball pitcher can ever achieve that, by the way).
How many miles per hour equals 1 mile per second?
There are 3600 seconds in an hour. Therefore going at 3600 miles per hour is equivalent to 1 miles per second.
What is the acceleration of a car that goes from 32 miles per second to 96 miles per second in 8 seconds?
Acceleration = change in velocity/change in time Acceleration = 96 miles per second - 32 miles per second/8 seconds = 8 miles per second per second or, better expressed 8 mi/s^2 ---------------
What magnitude is the acceleration from 54 miles per second to 4 miles per second in 0.75 seconds?
-66.667 miles per second squared
What is the acceleration of 3 miles per second to 9 miles per second in 3 seconds?
A gain of 2 miles per second squared
If starting on a skateboard and 10 seconds later traveling 20miles per second what is acceleration?
20 miles per second / 10 seconds = 2 miles per second ^ 2
What is the acceleration between 7 miles per second to 2 miles per second in 5 seconds?
negative one mile per second per second
When a runner accelerates from 0 miles per second to 3 miles per second in 12 seconds what was the acceleration?
3 / 12 = 0.25 miles/second2.
What is the acceleration in miles per second squared if a car is traveling 20 miles per second and takes 3 seconds to brake?
-6.667 miles per second squared
What is a car's acceleration if it increases its speed from 5 miles per second to 20 miles per second in 3 seconds?
5 m/s2
A motorcycle can accelerate from 0 to 60 in 3 seconds what is its acceleration in miles per hour per second?
20 miles/hour/second The acceleration is simple division 60/3 = 20.
What is the acceleration of a car that goes form 0 miles per second to 25 miles per second in 3 seconds?
Acceleration = (change in speed) divided by (time for the change)Acceleration = (25 - 0)/(3) = 81/3 miles per second2Don't try this at home. That acceleration is about 1,368 G's. You can not survive it!
A car accelerates to pass a truck going from 20miles per second to 29miles per second in 3 seconds what was the acceleration?
So acceleration is an increase of speed every second. The increase of speed was 9miles/sec and this was over 3 seconds. Therefore there was an acceleration of 3 miles/second every second i.e. 3m/s2
How to find magnitude of acceleration?
Rule: Magnitude of acceleration = Change of velocity / Time interval In linear motion, magnitude of acceleration is the measurement of change in speed in speed per unit time. For example: A car reaches a speed of 20 miles per second in 4 seconds, the magnitude of acceleration is 5 miles per second. a = 20 miles/second divided by 4 seconds = 5 miles per second. Acceleration is a vector, which means it has magnitude and direction. To describe accelerated motion completely, the direction also needs to be included. So it would be 5 miles per second in whatever direction it is going.
