Answer:
Do we have to choose out of those three?
Explanation:
Answer:
a) 2.85 m/s
b) -24.01 m/s
c) 1
Explanation:
From the question, we can attest that the motion of the fish that was dropped by the seagul is that of a projectile motion. This motion is made up of two other motions which are, a horizontal uniform motion and a vertical motion, at constant acceleration. From the question, we are asked to find the horizontal motion. And then, the horizontal component of the fish's velocity does not change, therefore its the horizontal component of the fish's velocity is 2.85 m/s
To find the vertical component of the fish's velocity, we use the equation
v(y) = u(y) + gt
Where u(y) is the initial velocity which is zero, and g is the acceleration due to gravity which is -9.8 m/s. We are also told from the question that it took 2.45 s, and that's our time t. Applying this into the equation, we have
v(y) = 0 + -9.8 * 2.45
v(y) = -24.01 m/s
For the 3rd part, the horizontal component of the fish's velocity would decrease
Answer:
B) A body at rest will stay at rest
Explanation:
A body in motion will stay in motion unless acted on by another force.
Answer:
0.08
Explanation:
Length the impulse has to travel i.e., the length of the nerve cell connecting the spinal cord to your feet = 1.2 m
Speed at which the impulse travels in the nerve cell = 15 m/s
Time = Distance / Speed
![\text{Time}=\frac{1.2}{15}\\\Rightarrow \text{Time}=0.08\ s](https://tex.z-dn.net/?f=%5Ctext%7BTime%7D%3D%5Cfrac%7B1.2%7D%7B15%7D%5C%5C%5CRightarrow%20%5Ctext%7BTime%7D%3D0.08%5C%20s)
∴ Time taken by the impulse to travel the distance from the nerve cell connecting the spinal cord to your feet is 0.08 seconds