Two rocks are moving through empty space in a straight line at the same speed. one has a mass of 10 kg, the other has a mass of 50 kg. which statement about the rocks is true? a. both will be stopped by the same amount of force acting against them. b. the one with less mass takes more force to stop. c. the one with greater mass takes more force to stop. d. both will stop on their own without any force acting on them.

69. air frictionthe velocity of the satellitea. decreases b. increases c. sometimes increases sometimedecreases d. no effect at all70. the unit of gravitational potential energy isa.jouté b.watt c. newtond.pascal71. which of the following is not influenced by a magneta. cobalt b.copper c.irond. nickel72. one joule of work done in one second by unit positive chargea.1 watt b.1 volt c.1 js d. none73. the most deviated colour of light after passing through a prisea. violet b.red c. green d.yellow4. a coin is placed below a beaker fill with water upto 12 cm isdisplaced by water isa. 9cm b.6cmс.3cmd.7cm