I got you!
Answer:
well if the choices are
a. moons and meteors
b. comets and planets
c. asteroids and comets
<h2><u><em>
d. planets and meteors</em></u></h2>
Explanation:
D because planets are much bigger that meteors, meteors have to be smaller than dwarf planets in order to be a meteor
A. The motion is the same as that of the ball that is thrown straight upward in that the first part is the decreasing of the velocity until the motion is halted. Also the magnitude of the deceleration is the same for both. The same path is also true for the second part of the motion with still the same magnitude for the acceleration.
b. The difference in these motion is the direction of the motion. One is horizontal and the other one is vertical. Also, the masses of the objects used may be different.
Car A experienced a greater impulse, because it stopped in a shorter amount of time.
Impulse is defined as the change in force over time. Since both cars have the same mass, as well as the same initial and final velocities, the only factor that makes a difference is the time taken to achieve the stop.
Answer:
<h3>1.03684m</h3>
Explanation:
Using the formula for calculating range expressed as;
R = U√2H/g where
R is the distance moves in horizontal direction = 18.4m
H is the height
U is the velocity of the baseball = 40m/s
g is the acceleration due to gravity = 9.8m/s²
Substitute the given parameters into the formula and calculate H as shown;
18.4 = 40√2H/9.8
18.4/40 = √2H/9.8
0.46 = √2H/9.8
square both sides;
(0.46)² = (√2H/9.8)²
0.2116 = 2H/9.8
2H = 9.8*0.2116
2H = 2.07368
H = 2.07368/2
H = 1.03684m
Hence the ball is 1.03684m below the launch height when it reached home plate.