Answer:
For part 1) correct answer is : a) SB=SN<VB=VN
For part 2) correct answer is : a) SB=SN<VB=VN
Explanation:
We will use the following formula of momentum
momentum after collision
=momentum before collision
=m*u1-(3*m*u2)
As we know u1 = u2 = 20 m/s
Hence,
-2*m*20 = 4*m*v
v = -10 m/s
v being the common velocity of the SUV and car after the collision
As we know that impulse is J = change in momentum = m*(v-u)
And u being initial velocity which is same for the SUV and car
non belted passengers collide with dashboards with a force which is called as a internal force and due to that internal forces the momentum remains constant heance impulse is also same experienced by seatbelted and non seat belated
As mass of SUV is 3 times the mass or car.
Hence the correct option is a) SB=SN<VB=VN
2) There is the same order of rant for force and impulse
As we know that impulse j = F*dt
Hence correct answer. is a) SB=SN<VB=VN
Newton's<span> first </span>law of motion<span> has been frequently stated throughout this lesson. An</span>object<span> at rest stays at rest and an </span>object<span> in </span>motion<span> stays in </span>motion<span> with the same speed and in the same direction unless </span>acted<span> upon by an </span>unbalanced force<span>.</span>
Answer:
Increase air resistance
Explanation:
Gravity forces the parachute down but air resistance pushing up on the flat surface of the parachute causes it to fall slower to the ground.
Answer:
EXAMPLE:when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air.
Speed: measure of how fast an object travels
Velocity: measure of how fast, and in what direction, an object travels
Distance: how far an object has traveled on some path
Position: where an object is located in some reference system
Displacement: the difference between an objects starting position and it’s ending position
