Acceleration means speeding up or slowing down, a change in velocity.
Since the velocity was constant, the acceleration was. 0
momentum is mass x velocity (p=mv), and velocity is distance divided by time (d/t),so p=m(d/t)=(70kg)(400m/50s)=560 kgm/s================================Answer #2:If the questioner actually knew what he was talking about when he postedthe question, then the runner's average momentum is(70 kg) x (400 miles) x(1,609.344 meters/mile)/(50 seconds) = 9.012 x 105kg-m/secWe can't help but notice that in the question's frame of reference, the runner issteaming along at 28,800 miles per hour. This arouses our curiosity, but is notgermaine to the problem or to its solution, and we play the hand we are dealt.Our math and physics are bullet-proof, and we stand by them.
k=.0895
The reason that the temperature in an ice bath remains constant for several minutes after placing a beaker in a warm water bath, is that it takes water longer to heat. The cold water will not heat up right away because the energy hasn't transferred.
"How fast" equals "what acceleration" times "how long". There are a number of proposed designs for "nuclear space drives", from the Orion Nuclear Pulse Rocket to NERVA to ion engines. The only "nuclear space drive" currently in use is a ion engine in use on an unmanned probe. The acceleration of the rocket is very very tiny - but it runs for months at a time, building up a respectable velocity. The problem with conventional rockets is that they have very high accelerations - for about 6 minutes. Then they are usually out of fuel, or nearly so. Nuclear propulsion has the POTENTIAL - as yet only dimly realized - to allow the engine to continue to operate for long periods of time at much lower accelerations, but building up tremendous velocity because of the duration of the thrust. So I guess the "real" answer to "how fast" would be "We don't know yet. But eventually, VERY fast."
yes
Since acceleration is a change in velocity, if your velocity is constant (does not change), your acceleration is zero.
When something is traveling at a constant velocity it has no acceleration. In other words your answer is 0.
If an object is traveling at a constant velocity, its acceleration is 0. Even if it traveled for 2 years.
1). If neither speed nor direction are changing, then acceleration is zero.2). "minutes" is not a unit of velocity, but we get the idea
zero - it is constat velocity. so acceleration is zero50 m/s2 Another : The acceleration is ZERO. Acceleration is defined as the change in velocity per unit time. If the ball is traveling a constant velocity over a two minute period, the acceleration would be zero since there is no change in velocity.
The average velocity is trying to find how fast the car is going at an average rate. However, constant velocity means that the car is going at an unchanged velocity. Say a car is going at 75 m/s and then changes to 50 m/s and then changes to 25 m/s in 30 minutes. The car is going at different velocities at different times. To find the average, you simply just add the 3 together, then divide by 3 giving you, 50 m/s In the 30 minutes, it's average velocity was 50 m/s However, for a car going at a constant velocity, it means that the velocity never changes. Say a car is going at a constant velocity for 30 minutes at 50 m/s. In those 30 minutes, the car will never change it's velocity and remain at 50 m/s. Constant means that it doesn't change.
b. -1.92 m/s2Minutes per second is not a unit of velocity. If the question meant meters per second, the answer is correct.
An interval is the spacing of time. For example: I ran for an interval of 10 minutes then walked for an interval of 30 minutes. Or each car has an interval of 0.5 seconds.
Constant speed (in a straight line) means there is no acceleration.Constant speed (in a straight line) means there is no acceleration.Constant speed (in a straight line) means there is no acceleration.Constant speed (in a straight line) means there is no acceleration.
As long as the 30 minute are spent driving in a straight line, the acceleration is zero.
An interval is the spacing of time. For example: I ran for an interval of 10 minutes then walked for an interval of 30 minutes. Or each car has an interval of 0.5 seconds.
I went out for interval for 10 minutes.