if the mass of one object increase by 3, the mass of another object increase by 5, and the distance between the two objects stays the same then what will be the new force

Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net

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

Aheavy piece of hanging sculpture is suspended by a90-cm-long, 5.0 g steel wire. when the wind blows hard, the wire hums at its fundamental frequency of 80hz. what is the mass of the sculpture?