USE THE FORMULAS to solve the bwlows and show your work: F = ma v = v + at i p = mv v = Ad At d = vt + at == P + P P net PE = mgh KE = mv 2 Av a = At 2 2 + 2ad f ME=PE + KE PE =kx F = kx v = f CONSTANTS: mm, F = G g r F = |, || a = 9.81 g G = 6.67 x 10 -11 Nm kg k = 9.0 10 Nm c Page 1 1. 2 Thinga-ma-jigs in space are separated by a distance of 1500m and exerting an equal force of 1000N. What is the mass of one Thinga-ma-jig? (Round to 3 significant figures) 2. The moon is 3.84x10^8 m from the center of Earth's mass. The magnitude of the Force of gravity exerted by the Earth on the moon is 1.97 x10^20 N. How would this Force change is the Moon was half the mass but twice as close? (Write the force) 3. An object in space with a mass of 110^6 kg suddenly finds itself directly between 2 planets (what are the chances???). Planet A has a mass of 3.5x10^20 kg, and Planet B has a mass of 4.0x10^18 kg. The object is 3x10^8 m from Planet A, and 5x10^9 m from Planet B. What is the net Gravitational Force acting on the object and towards which planet will the object be pulled? A. .259 N towards Planet A B. 2.59 N towards Planet B C. 259 N towards Planet B D. 2.59 N towards Planet A Page 2 E. 1.52 N towards Planet A F. 1.52 N towards Planet B G. 152 N towards Planet A H. 152 N towards Planet B 4. 2 protons with a charge of 1.60x10^-19 C are on either side of an electron with a charge of -1.60x10^-19 C. Proton 1 is 3x10^-5 m from the electron while proton 2 is 1x10^-5 m from the electron. What is the net electric force acting on the electron? A. 2.04 x 10^-18 N towards Proton 1 B. 2.04 x 10^-18 N towards Proton 2 C. 2.04 x 10^-19 N towards Proton 1 D. 2.04 x 10^-19 N towards Proton 2 E. 2.04 x 10^-17 N towards Proton 1 F. 2.04 x 10^-17 N towards Proton 2 G. 2.04 x 10^-16 N towards Proton 1 H. 2.04 x 10^-16 N towards Proton 2 Page 3 5. The magnitude of electrostatic force between 2 charged particles is 7.2 N. The distance between the charged particles is .5 m and the charge of particle 1 is 1.0x10^-5 C. What is the magnitude of the charge of particle 2? Page 4