A driverless car collides head on with a stationary sign. The collision brings the car to a stop, but does not move the sign. Which design feature would have minimized the force of impact in the collision?Immersive
(1 Point)

a sign that can withstand the force of a more massive car without moving

a sign that breaks loose from the ground when a force is applied to it

a car that can carry a greater mass of passengers and cargo

a car that can decelerate at a greater rate during collisions by not bending on impact

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

Abody covers a semicircle of radius 7cm in 5s .find its linear speed

The frequency of a tuning fork can be found by the method shown. a long tube open at both ends is submerged in a beaker of water, and the vibrating tuning fork is placed near the top of the tube. the length l of the air column is adjusted by moving the tube vertically. the sound waves generated by the fork are reinforced when the length of the air column corresponds to one of the resonant frequencies of the tube. the smallest value for l for which a peak occurs in sound intensity is 7 cm. l what is the frequency of the tuning fork? the speed of sound in air is 345 m/s. answer in units of hz