(1)
Cheetah speed:
Its position at time t is given by
(1)
Gazelle speed:
the gazelle starts S0=96.8 m ahead, therefore its position at time t is given by
(2)
The cheetah reaches the gazelle when . Therefore, equalizing (1) and (2) and solving for t, we find the time the cheetah needs to catch the gazelle:
(2) To solve the problem, we have to calculate the distance that the two animals can cover in t=7.5 s.
Cheetah:
Gazelle:
So, the gazelle should be ahead of the cheetah of at least
For number one the answer is decrease.
for number two is move in the driction of the force
for number three is unbalanced
hope this helps have a great day :)
Answer:
1440 W
Explanation:
The power drawn by a voltage source is the rate of energy consumed, and it can be written as:
where
V is the voltage
I is the current
P is the power
For the source in this problem we have:
I = 12 A is the current
V = 120 V is the voltage of the source
Solving for P, we find the power:
G→Acceleration due to gravity=9.8m<span>s<span>−2</span></span>
So
<span>Acceleration of performer=1.5g=1.5×9.8m<span>s<span>−2</span></span>=14.7m<span>s<span>−<span>2</span></span></span></span>