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ewton's first law of motion
and collisions
different objects behave differently during
collisions. many objects actually deform, or change
shape, during a collision. cars are designed to
deform in specific ways during a collision. this is an
important safety feature because it reduces the force
acting on the passengers in the car. some of the
energy from the moving car goes into deforming the
vehicle rather than affecting the passengers.
recall that newton's first law of motion
describes the inertia of an object, or an object's
resistance to a change in motion. how does inertia autom
affect collisions? look at the car crash shown. you
know that when the car stops, the passengers will
cue to move due to inertia. this is why we have seat belts to stop passengers dummy
a collision. how does inertia explain the crumpling of the car during the com
automotive engineers study collisions to protect passengers
from harm in collisions such as this one.
5. collaborate with a partner, analyze the collision shown in the photo. use you
knowledge of newton's laws of motion and collisions to describe the motion of the
car throughout the collision.

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.

answer: i'm not sure which is which for i get confused on it all the time but i can tell you that the answer lies with the convex and concave devices. i hope this you. have a good day and best of luck to you!

explanation:

this is poiselle's equation from fluid mechanic in physics. mech eng