Annie wants to find out how different amounts of force can affect how fast an object moves. which of the following is the best scientific investigation annie could do to find out?
a. survey her classmates to see what they think about this topic
b. push the same object with different amounts of force and measure its speed
c. push objects that have different shapes and measure how far they travel
d. measure how much force it takes to move objects with different masses

Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s