<h2>
Formula which describes v in terms of t is 
</h2>
Explanation:
A train travels the distance between the points A and B, which is 600 km
Distance between A and B = 600 km
Speed of train = v
Time taken by train = t
We know that
Distance traveled = Speed of travel x Time taken
600 = v x t
Formula which describes v in terms of t is
<h2>
Tension in ropes are 333.33 N and 566.67 N.</h2>
Explanation:
Refer the given figure showing the arrangement.
For having stability we have torque at A and B are zero.
Sum of Torques at A = 0
700 x 1 + 200 x 1.5 - Q x 3 = 0
3Q = 1000
Q = 333.33 N
Sum of Torques at B = 0
200 x 1.5 + 700 x 2 - P x 3 = 0
3P = 1700
P = 566.67 N
Tension in ropes are 333.33 N and 566.67 N.
Answer:
a) 3.78 m/s
b) 3.78 m/s
Explanation:
a )From the equations of kinematics we know that
Vf - Vi = at
since Initial speed Vi = 0
acceleration = 4.2 m/s2
so we have
Vf = a t
= (4.2) (0.9)
= 3.78 m/s
velocity at t = 0.9 s. m/s is 3.78 m/s
b) If the sprinter maintains constant velocity then acceleration becomes zero.
So velocity is 3.78 m/s
They don't require a medium to propagate, meaning that they can travel through air, solid objects, and space.
