Answer:
Physics contributes to the technological infrastructure and provides trained personnel needed to take advantage of scientific advances and discoveries. Physics is an important element in the education of chemists, engineers and computer scientists, as well as practitioners of the other physical and biomedical sciences.
Explanation:
The easiest way to answer this question is by realizing there are relating the velocities of the two cars. To tackle this problem, you have to understand the picture. Car 1 travels at 35m/s and Car 2 travels at 25m/s. Based on relative velocities, we can understand that Car 1 travels 10m/s faster than Car 2 every second. So we can interpret Car 1's relative velocity to Car 2 as 10m/s. Car 1 needs to travel 10m/s till a point of catching up to Car 2 which is 462m away.
v = 10m/s
d = 462m
v = d/t
(10) = (462)/t
t = 46.2s
So it takes 46.2 seconds for Car 1 to catch up to Car 2, but the question is asking how far does Car 1 travel to catch up. So we have to use Car 1's velocity and not the relative velocity:
v = 35m/s
v = d/t
(35) = d/(46.2)
d = 1617m
Car 1 traveled a total distance of 1617m.
-- You are 462 meters behind.
-- You're gaining on him at the rate of (35m/s - 25m/s)= 10 m/s.
-- At that rate, it'll take you (462m / 10m/s)= 46.2 seconds to over take him.
-- During that time, you'll cover (46.2s x 35m/s)= 1,617 meters.
Answer:
Explanation:
There are several deductions we could make. If the force applied by the students is less than friction, then the box won't change its state of motion, it will remain under equilibrium, because friction is a force that it's always opposite to any force applied, if the students are pushing forward, the friction will push back.
But, if the force applied by the students is higher than friction, the box will change its state of motion, it won't remain in equilibrium states and it will start to move.
Therefore, the condition is that the force applied by the students must be higher than friction.
The correct answer is option A. Luster
Hope this helps! :)
B. molecules move more rapidly
C. there is no change in molecular motion
D. temperature remains unchanged