Answer:
through out the projectile motion the horizontal vilocity remains constant due the absence of the air resistance so the ans is 47.3
Explanation:
Answer:
The correct statements are A and E.
Explanation:
This statements will be explained according to the Newton's third law of motion. It states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction (law of action and reaction).
A. You are experiencing a larger acceleration than your friend, but in the opposite direction. True. The forces are equal, but the mass of each individual is different, so the acceleration has to be different too. In this case, the smaller mass (you) has the large acceleration.
B. You are experiencing the same acceleration as your friend, but in the opposite direction. False. The forces are equal but the accelerations are different.
C. You are experiencing a smaller acceleration than your friend, but in the opposite direction. False. You are experiencing a larger acceleration due to the smaller mass.
D. You are experiencing a smaller force than your friend, but in the opposite direction. False. The forces are equal for both masses.
E. You are experiencing the same amount of force as your friend, but in the opposite direction. True.This is what the law states.
F. You are experiencing a larger force than your friend, but in the opposite direction. False. The forces are equal.
The force required for the car is 5841 N
Explanation:
First of all, we need to find the acceleration of the car, which is given by:
where:
v = 27 m/s is the final velocity of the car
u = 0 is the initial velocity (the car starts from rest)
t = 6 s is the time the car takes to accelerate from u to v
Substituting, we find
Now we can find the force needed to accelerate the car; using Newton's second law of motion,
where:
F is the net force on the car
m = 1298 kg is the mass of the car
is the acceleration
Substituting, we find:
Learn more about force and acceleration:
brainly.com/question/11411375
brainly.com/question/1971321
brainly.com/question/2286502
brainly.com/question/2562700
#LearnwithBrainly
3. Newton's third law
5. Conservation of momentum
<u>Explanation:</u>
Conservation of momentum is mostly used for describing collisions between objects. Here, the type of collision is inelastic collision in which the object when collides with the pendulum bob sticks to it and moves as a combined object. In this process the momentum is conserved.
Let the mass of the pendulum be m1 moving with a velocity v1.
Let the mass of the object be m2 moving with a velocity v2.
Since the momentum is conserved during collision, the equation will be
Where, v is the velocity of the combined system.
Conservation of momentum is actually a direct consequence of Newton's third law.
Consider a collision between two objects, object A and object B. When the two objects collide, there is a force on A due to B. However, because of Newton's third law, there is an equal force in the opposite direction, on B due to A
FAB = -FBA
The mechanical energy is not conserved due to the fact that the kinetic energy is not the same before and after the collision.
1 angstrom = 10^-8 cm
6.5 x 10-4 cm = 65 000 x 10-8 cm = 65 000 angstroms
answer 65 000 angstroms