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

omit Question 1  Two masses, 4 kg and 6 kg, initially at rest, are both released and fall freely to the ground. Which mass would experience the greater acceleration while falling? 6 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 kgboth masses experience the same gravitational force of attraction6 kg omit Question 3  When initially released, which mass weighed more in the earth's gravitational field? 4 kg6 kg both masses weighed the same omit Question 4  If when both masses impact the earth their centers land 2.47 meters apart, what is the gravitational force exerted on the small mass by the larger mass? 1.09 x 10-10 N2.19 x 10-11 N1.64 x 10-11 N2.62 x 10-10 N omit Question 5  On the surface of Planet X a 38-kg mass weighs 558.6 N. What is the local value of Planet X's gravitational field strength? 14.7 N/kg4.9 N/kg0.068 N/kg57.0 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. 8.61 x 1026 kg8.97 x 1024 kg8.79 x 1025 kg3.99 x 1024 kg omit Question 7  If the 38-kg mass is moved to a position which is 6.5 radii above the surface of Planet X, how will its weight be affected? its weight will be decreased by a factor of 10 / 65its weight will be increased by a factor of 65 / 10its weight will be decreased by a factor of 100 / 4225its weight will be increased by a factor of 4225 / 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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