Answer:
AN ELASTIC COLLISION IS SAFER
Explanation:
IT'S BECAUSE THE MOVEMENT IS PRESERVED. YEN AN ELASTIC
COLLISION, THE ELASTIC BODY ABSORBS SOME OF THE MOVEMENT.
THIS CAUSES THE CAR TO SLOW DOWN MORE SLOWLY THAN IN AN
INELASTIC COLLISION WHERE IT DECELERATES FASTER.
ANYWAY I LEAVE YOU THE LINK
(THEY ALREADY DELETED THE ENGLISH SITE, BUT YOU CAN USE
TRANSLATOR):
https://gscourses.thinkific.com
Answer:
Explanation:
Only force in the direction of motion does work
The force acts in the x direction
The x change of position was 6 m
W = Fd = 12(6) = 72 J
Answer: B
Explanation:
Let us first resolve the forces.
Horizontal, the vectorial resolution is equal to zero. Since the positive direction and negative direction vector are of same magnitude. Therefore, summation of horizontal forces Fh = 0
Vertical resolution, the sum of forces will be Fv = 30 - 35 = - 5 N
Resultant force F = sqrt( Fv^2 + Fh^2)
Substitutes Fv and Fh. We get
R = sqrt ( 25) = 5N
We are given that the mass M = 2kg
From Newton second law,
F = Ma
Where a = acceleration
Substitute F and M and make a the subject of formula
5 = 2a
a = 5/2 = 2.5 m/s^2
Therefore, acceleration a of the object is 2.5 m/s^2 down.
The Answer is Winds are caused by moving from air which is from high to low pressure
