Directions: On this worksheet you will examine the properties of gravitational forces and fields.

omit Question 1  Two masses, 4 kg and 7 kg, initially at rest, are both released and fall freely to the ground. Which mass would experience the greater acceleration while falling? 7 kg4 kgboth masses experience the same acceleration omit Question 2  When initially released, which mass experienced the greater gravitational force of attraction to the earth? 4 kg7 kgboth masses experience the same gravitational force of attraction omit Question 3  When initially released, which mass weighed more in the earth's gravitational field? 4 kg7 kg both masses weighed the same omit Question 4  If when both masses impact the earth their centers land 2.331 meters apart, what is the gravitational force exerted on the small mass by the larger mass? 3.44 x 10-10 N1.35 x 10-10 N3.68 x 10-11 N2.15 x 10-11 N omit Question 5  On the surface of Planet X a 37-kg mass weighs 634.6 N. What is the local value of Planet X's gravitational field strength? 17.2 N/kg7.4 N/kg64.8 N/kg0.058 N/kg omit Question 6  If Planet X has the same radius as the Earth, what is the mass of Planet X? If needed, the mass of the Earth is 5.98 x 1024 kg. 1.01 x 1027 kg1.05 x 1025 kg3.42 x 1024 kg1.03 x 1026 kg omit Question 7  If the 37-kg mass is moved to a position which is 6.3 radii above the surface of Planet X, how will its weight be affected? its weight will be increased by a factor of 63 / 10its weight will be decreased by a factor of 10 / 63its weight will be decreased by a factor of 100 / 3969its weight will be increased by a factor of 3969 / 100 omit Question 8  When released from rest an object in freefall and tracked by a motion detector, which of the following position-time graphs will be displayed? omit Question 9  When released from rest an object in freefall and tracked by a motion detector, which of the following velocity-time graphs will be displayed?

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