The information is not consistent.
Let u = initial velocity = 25 m/s
v = final velocity = 0 m/s
s = distance travelled = 100 m t = time - in seconds = 180 s
a = acceleration (so deceleration = -a).
Eqn 1
v = u+at => a = (v - u)/t = (0 - 25)/180 = -25/180 = -0.13888... m/s^2
Eqn 2
s = vt-0.5at^2 => a = (vt - s)/(0.5t^2)
= -100/(0.5*180^2) = -0.006173 (approx) m/s^2.
Eqn 3
s = ut+0.5at^2 => a = (s - ut)/(0.5t^2)
= (100 - 25*180)/(0.5*180^2) = -0.2716 m/s^2
Eqn 4
v^2-u^2 = 2as => a = (v^2 - u^2)/2s
= -25^2/(2*100) = -3.125 m/s^2
Take your pick.
You divide the distance traveled by the time.
7.5
20 meters per second
Yes, many swimmers can even swim 500 meters in 7 minutes.
Velocity is measured by distance traveled divided by the time taken to travel. Unlike speed Velocity contains vectors, which means you can have a negative velocity. For example if a car traveled to the right 6 meters in 3 seconds velocity would be 2 meters per second or 2 m/s An example showing the vector (Direction) would be a car traveled 6 meters to the left in 3 seconds. -6/3= -2 m/s
0.14
0.14 m/s2 A+
0.14 m/s²
you doing homework???
Average speed during the deceleration is 1/2(19 + 0) = 9.5 meters per second.Time of deceleration is (31 / 9.5) seconds.Magnitude of deceleration is (change of speed) / (deceleration time) = 19 / (31/9.5) = (19 x 9.5) / 31 = 5.823 m/s2(The acceleration is the negative of this number.)
Deceleration means to decrease the velocity. The SI unit is the same as acceleration. In SI units, acceleration is measured in meters/second² (m·s-2).
The initial velocity is 10 meters/sec and is thrown up against the gravitational pull of the earth. This means that the ball is experiencing a deceleration at the rate of 9.8 meters/sec/sec to bring its final velocity to zero. v^2 - u^2 = 2gs where u is the initial velocity, v the final velocity, g is the acceleration or deceleration, and s is the distance traveled. 0^2 - 10^2 = 2 x (-9.8) x s -100 = -19.6s 100 = 19.6s s = 100/19.6 = 5.102 meters Now v = u + gt where v is the final velocity, u is the initial velocty, g is the acceleration or deceleration, and t is the time. When the ball is thrown up with 10 meters/sec velocity it is acted upon by the deceleration of gravity until its velocity becomes zero. So 0 = 10 - 9.8t or 9.8t = 10 t = 1.020 seconds The time for the ball to go up is 1.020 seconds and the same time is taken for the ball to come back for a total of 2.040 seconds.
The velocity changes from [ V upward ] to [ V downward ].The total change in velocity is [ 2V ].Acceleration = (change in velocity) divided by (time for the change) = 2V/6But the acceleration is just the acceleration of gravity = 9.8 meters / sec2 .9.8 = 2V / 62V = 58.8V = 29.4 meters per second upward
1 kilometer is equal to 1000 meters. 4.1 minutes is equal to 246 seconds. Velocity would equal 1000 meters divided by 246 seconds. So the answer is 4.065 meters per second West.
80/10 = 8 metres per minute
You divide the distance traveled by the time.
Ther velocity when falling 1000 meters is v=sqroot(2x1000x9.8) = 140 meters/second.