Answer:
-400km/hr
Explanation:
Velocity=displacement/time
=400/1
=400Km/hr
=-400km/hr (because west direction)
Vf=(35.0)+(-9.8)(2)
the answer would be 15.4 m/s
Since the mass is moving in a horizontal circle, we do not look at gravity, tension in string or weight of the mass.
<em>
Time period for one cycle around circle = T = 0.42 seconds</em>
<em>Tangential Velocity or speed of the mass = </em>
<em> tangential distance traveled in 1 cycle or revolution / time period</em>
= circumference of circle / time period
<em> = 2 π radius / T = 2 π 1 meter / 0.42 sec </em>
<em> = 14.96 m/s</em>
3.5 meters per second second is the acceleration because we know that acceleration is change in velocity over time and the change is velocity here is 35 and the time is 10 so we can simply divide 35 by 10 which is 3.5 m/s squared
