In a crash a vehidle that was stopped at a red light is rear ended by another vehicle with the same mass. f the tire marks show that the two vehicles moved after the collision at
4m's what was the speed of the vehide before the collision?
Please help me I need it

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer