Answer: A (
,309.8°)
B (2
, 315°)
C (
, 26.56°)
Explanation: To transform rectangular coordinates into polar coordinates use:
and 
For point A:




°
Point A is in the II quadrant, so we substract the angle for 360° since it is in degrees:

309.8°
Polar coordinates for point A is (
, 309.8°)
For point B:





°
Point B is in IV quadrant, so:

315°
Polar coordinates for point B is (
, 315°)
For point C:





26.56°
Polar coordinates for point C is (
, 26.56°)
Impulse on the object: -20 kg m/s
Explanation:
The impulse exerted on an object is a vector quantity equal to the product between the force exerted on the object and the time interval during which the force is applied.
The impulse exerted on an object is also equal to its change in momentum. Mathematically,

where:
m is the mass of the object
u is the initial velocity
v is the final velocity
For the object in this problem, we have
m = 5 kg
u = +6 m/s
v = +2 m/s
Therefore, its impulse is:

The negative sign means the direction of the impulse is opposite to the direction of motion of the object.
Learn more about impulse:
brainly.com/question/9484203
#LearnwithBrainly
Answer:
High energy waves have high amplitudes
Explanation:
The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases. ... The amplitude of a wave is related to the amount of energy it carries. A high amplitude wave carries a large amount of energy; a low amplitude wave carries a small amount of energy
Answer
given,
speed of motorist = 25 m/s
distance = 100 m
time to apply break = 0.5 s
a) distance traveled during the reaction time
D = s x t
D = 25 x 0.5
D = 12.5 m
b) the velocity of the motorist at the end of the reaction time is equal to 0 m/s
c) using equation of motion
v² = u² + 2 a s
v = 0 m/s
u = 25 m/s
0² = 25² + 2 x a x 100

a = -3.125 m/s²