The hiker followed the north trail a distance of two kilometers in thirty minutes is an example that provides a complete scientific description of an object in motion.
Answer:
19.48 m
Explanation:
Gravitational potential energy = mgh
Current weight = 539 N
Weight = mg = 539 N
Mass x Acceleration = 539 N
Mass x 9.81 = 539
Mass = 54.94 kg
Gravitational potential energy = mgh = 10500 J
54.94 x 9.81 x h = 10500
h = 19.48 m
Height of sitting = 19.48 m
Answer: 5 m
Explanation:
X^2= 9+16
X = 5
According to pythagoras law
Answer:
3
Explanation:
-The formula for kinetic energy is the following:
K.E.=
m
where:
K.E. is kinetic energy
m is mass
v is velocity
Here we can see that kinetic energy is proportional to the velocity squared, so if the speed or velocity of the scooter doubles then this would quadruple its kinetic energy.
-The acceleration is the rate of change of velocity per unit of time. A scooter could double its speed with a constant acceleration, so an increase in speed doesn't necessarily mean an increase in acceleration.
-The formula for momentum is the following:
p=mv
where:
p is momentum
m is the mass of the object
v is the objects velocity
Here we can see that the momentum is directly proportional to the velocity, so if the scooter where to double its velocity then it would also double its momentum.
First find the time it takes for the ball to reach the ground using the vertical component of its position vector:



Meanwhile, the horizontal component of the ball's position vector is


After about 4.52 s, the ball has traveled a horizontal distance of

which you would round to 200 m, so the answer is B.