What is the fastest land animal on Earth? antelope false cheetah true horse false jackrabbit false Single Usain Bolt currently holds the record fastest speed in what sprinting category? 100-meter dash true 200-meter dash false 400-meter dash false Marathon false Single What is the standard distance of a marathon race? 10 km false 16 km false 34 km false 42 km true Single What is the SI unit for speed? kilometers per hour false kilometers per second false meters per second true meters per second squared false Single What device is used to measure the distance travelled by a car? odometer true speedometer false tachometer false dynamometer false Single Which of the following human-made objects have achieved escape velocity with respect to the Sun? New Horizons true Ulysses false Chang'e 2 false Cassini false Single What is the change in an object's acceleration over an interval of time? jerk true inertia false impetus false momentum false Single What quantity of a line do you obtain when you divide the interval of its y-axis by an interval of its x-axis? x-intercept false y-intercept false slope true limit false Single Fill in the blanks. When an object is said to have a speed of Mach 3, it means it has ____ times the speed of sound in dry air at a temperature of 15°C. 0.33 false 1.5 false 3 true 6 false Single What is the downward acceleration experienced by objects on or close to Earth's surface as a consequence of its gravitational pull? 3.7 m/s2 false 8.7 m/s2 false 9.8 m/s2 true 10.4 m/s2 false Single