IF HELP TODAY AND SHOW WORK ILL MAKE BRAINIEST (1) Crash Test. An automobile safety laboratory perform s crash tests of vehicles to ensure their safety in high-speed
collisions. The engineers set up a head-on crash test for a Smart Car which collides with a solid barrier. The
engineers know the car initially travels south at 100 km/h and the crash test dummy moves m south during the
collision. The engineers have a couple of questions: How much time does the collision take? What is the
passenger's acceleration during the collisioh?
(2) Microscopic physics. All cell biology works according to the laws of physics! A sodium ion (3.817x10-20kg)
arrives near an opening in a cell. You may assume it is initially at rest. Electric forces cause it to speed up and
travel towards the cell opening. As a result, it travels 1.48x10min 0.512 s. What is the acceleration of the
sodium ion?
(3) Off the Wall. An important part of Penny's swim race is when she turns around while pushing on the
swimming pool wall. When she makes contact with the wall, she is travelling at 1.66 m/s east. After pushing
against the wall for 0.3 s, she leaves contact with it and is travelling at 1.98 m/s west. What is her acceleration
during this time?
(4) The Track. A cart is placed at the bottom of an inclined track. It uses a spring to launch itself up the incline with a
speed of 0.79 m/s. While travelling up and down the incline, the cart has an acceleration of 0.54 m/s? How much
time does it take to make the complete trip up and back down to its starting position? (Hint: this is a one-step
problem