We know from the physics class that the time is simply the
distance divided by velocity:
time = distance / velocity
Substituting the given values and calculating for time:
time = 360 km / (72 km / hour)
time = 5 hours
<span>Therefore it takes the train 5 hours to arrive.</span>
Answer:
12 cm and 0.4
Explanation:
f = - 20 cm, u = - 30 cm
Let v be the position of image and m be the magnification.
Use lens equation
1 / f = 1 / v - 1 / u
- 1 / 20 = 1 / v + 1 / 30
1 / v = - 5 / 60
v = - 12 cm
m = v / u = - 12 / (-30) = 0.4
Answer:
A) 0N
Explanation:
According to Newton's 1st Law: an object in motion will keep its motion unless acted upon by a force. Hence, for an object to travel at a constant speed, no force should be exerted into the object.
Answer:
400 meters
Calculate how much time the stone take to achieve the highest point of its trajectory:
0 - 10 = -10 • t
-10 = -10t
t = -10/-10
t = 1
So, it took 1 second to achieve the highest point of trajectory. When the stone achieves it, its have velocity 0 and begin to fall, and it takes also 1 second to return to the top of the platform, so it means that during 2 seconds of the motion. The stone achieves the same high as the platform with the velocity of 10 m/s
Now let's calculate the distance its traveled to achieve the ground:
X = 10•8 + (10•8²)/2
X = 80 + 320
X = 400 meters
Answer:
<h2>Changes</h2>
Explanation:
<h3>Variable is something that varies and doesn't remain constant.</h3>