With what minimum speed must you toss a 110 g ball straight up to just touch the 11-m-high roof of the gymnasium if you release the ball 1.3 m above the ground?

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

According to newton’s law of universal gravitation, which statements are true? as we move to higher altitudes, the force of gravity on us decreases. as we move to higher altitudes, the force of gravity on us increases. as we gain mass, the force of gravity on us decreases. as we gain mass, the force of gravity on us increases. as we move faster, the force of gravity on us increases.